{"id":7232,"date":"2025-12-15T14:52:50","date_gmt":"2025-12-15T06:52:50","guid":{"rendered":"https:\/\/sunhyings.com\/?page_id=7232"},"modified":"2026-01-28T15:14:07","modified_gmt":"2026-01-28T07:14:07","slug":"unions","status":"publish","type":"page","link":"https:\/\/sunhyings.com\/fr\/industrial-pipe-fittings\/forged-fittings\/unions\/","title":{"rendered":"Unions (MSS SP-83)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"7232\" class=\"elementor elementor-7232\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5b995d7d e-flex e-con-boxed e-con e-parent\" data-id=\"5b995d7d\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;shape_divider_bottom&quot;:&quot;opacity-tilt&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 2600 131.1\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0 0L2600 0 2600 69.1 0 0z\"\/>\n\t<path class=\"elementor-shape-fill\" style=\"opacity:0.5\" d=\"M0 0L2600 0 2600 69.1 0 69.1z\"\/>\n\t<path class=\"elementor-shape-fill\" style=\"opacity:0.25\" d=\"M2600 0L0 0 0 130.1 2600 69.1z\"\/>\n<\/svg>\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-562b6788 e-con-full e-flex e-con e-child\" data-id=\"562b6788\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a985f56 elementor-widget elementor-widget-shortcode\" data-id=\"a985f56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75bb3265 elementor-widget elementor-widget-heading\" data-id=\"75bb3265\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">MSS SP-83 Unions Manufacturer | Class 3000 | NPT\/BSPT &amp; Socket Weld | Maintenance-Ready Joint<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-69c259e9 elementor-widget elementor-widget-text-editor\" data-id=\"69c259e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"228\" data-end=\"490\">SUNHY supplies forged MSS SP-83 pipe unions for high-pressure service where fast disassembly is required for maintenance, inspection, or equipment replacement. Unions provide a reliable break-point without cutting and re-welding long pipe runs.<\/p><p data-start=\"228\" data-end=\"490\">Available in threaded (NPT\/BSPT) or socket weld (SW) configurations as specified. Common stainless 304\/316L and carbon steel options, with EN 10204 3.1 MTC and inspection level available to match your project requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6c7e6400 e-con-full e-flex e-con e-child\" data-id=\"6c7e6400\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1bb789db elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"1bb789db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Serviceable joint, easy maintenance<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Precision fit, reliable connection<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Standard designs, quick selection<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56bc0e51 elementor-widget__width-initial elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"56bc0e51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Traceable markings, heat ID<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Inspection options, per spec<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Docs available, project ready<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6545c1f6 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"6545c1f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#Contact\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Inquiry Now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4fb3b535 e-con-full e-flex e-con e-child\" data-id=\"4fb3b535\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-71f0e7f5 elementor-widget elementor-widget-image\" data-id=\"71f0e7f5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"437\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/MSS-SP-83-Unions-Manufacturer4.webp\" class=\"attachment-large size-large wp-image-8252\" alt=\"MSS SP-83 Unions Manufacturer\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/MSS-SP-83-Unions-Manufacturer4.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/MSS-SP-83-Unions-Manufacturer4-800x437.webp 800w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/MSS-SP-83-Unions-Manufacturer4-768x419.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/MSS-SP-83-Unions-Manufacturer4-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d47cdc3 e-con-full e-flex e-con e-child\" data-id=\"d47cdc3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ccaa03a elementor-align-left elementor-widget elementor-widget-button\" data-id=\"2ccaa03a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download Catalogue<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67548f01 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"67548f01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Watch Video<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d639f32 e-flex e-con-boxed e-con e-parent\" data-id=\"5d639f32\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-28cf9d9e elementor-widget elementor-widget-heading\" data-id=\"28cf9d9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Specification &amp; Standard<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7dfc4f4 e-con-full e-flex e-con e-child\" data-id=\"7dfc4f4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-24f82374 e-con-full e-flex e-con e-child\" data-id=\"24f82374\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25b819ff elementor-pagination-position-outside elementor--h-position-center elementor--v-position-middle elementor-arrows-position-inside elementor-widget elementor-widget-slides\" data-id=\"25b819ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;navigation&quot;:&quot;both&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;infinite&quot;:&quot;yes&quot;,&quot;transition&quot;:&quot;slide&quot;,&quot;transition_speed&quot;:500}\" data-widget_type=\"slides.default\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-slides-wrapper elementor-main-swiper swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Slides\" dir=\"ltr\" data-animation=\"fadeInUp\">\n\t\t\t\t<div class=\"swiper-wrapper elementor-slides\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-repeater-item-7f4aa91 swiper-slide\" role=\"group\" aria-roledescription=\"slide\"><div class=\"swiper-slide-bg\" role=\"img\" aria-label=\"MSS SP-83 Unions Manufacturer\"><\/div><div class=\"swiper-slide-inner\" ><div class=\"swiper-slide-contents\"><\/div><\/div><\/div><div class=\"elementor-repeater-item-e875b6e swiper-slide\" role=\"group\" aria-roledescription=\"slide\"><div class=\"swiper-slide-bg\" role=\"img\" aria-label=\"MSS SP-83 Unions Manufacturer\"><\/div><div class=\"swiper-slide-inner\" ><div class=\"swiper-slide-contents\"><\/div><\/div><\/div><div class=\"elementor-repeater-item-6dca464 swiper-slide\" role=\"group\" aria-roledescription=\"slide\"><div class=\"swiper-slide-bg\" role=\"img\" aria-label=\"MSS SP-83 Unions Manufacturer\"><\/div><div class=\"swiper-slide-inner\" ><div class=\"swiper-slide-contents\"><\/div><\/div><\/div><div class=\"elementor-repeater-item-7960543 swiper-slide\" role=\"group\" aria-roledescription=\"slide\"><div class=\"swiper-slide-bg\" role=\"img\" aria-label=\"MSS SP-83 Unions Manufacturer\"><\/div><div class=\"swiper-slide-inner\" ><div class=\"swiper-slide-contents\"><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\" aria-label=\"Diapositive pr\u00e9c\u00e9dente\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\" aria-label=\"Diapositive suivante\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37514bef e-con-full e-flex e-con e-child\" data-id=\"37514bef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-135c032c e-con-full e-flex e-con e-child\" data-id=\"135c032c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bca6722 e-con-full e-flex e-con e-child\" data-id=\"bca6722\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a2bc2d7 elementor-widget elementor-widget-heading\" data-id=\"6a2bc2d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Nominal Size<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8da99be elementor-widget elementor-widget-text-editor\" data-id=\"8da99be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Commonly 1\/4&#8243; \u2013 2&#8243; (other sizes on request)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-26d01ef7 e-con-full e-flex e-con e-child\" data-id=\"26d01ef7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-37693f5b elementor-widget elementor-widget-heading\" data-id=\"37693f5b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Connection<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78645f7b elementor-widget elementor-widget-text-editor\" data-id=\"78645f7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Threaded (NPT\/BSPT) or Socket Weld (SW), as specified<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-16532f94 e-con-full e-flex e-con e-child\" data-id=\"16532f94\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-303d6905 elementor-widget elementor-widget-heading\" data-id=\"303d6905\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">End Preparation<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e71fc62 elementor-widget elementor-widget-text-editor\" data-id=\"4e71fc62\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Beveled ends for butt welding; typical practice per ASME B16.25 (per project WPS)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47476d6c e-con-full e-flex e-con e-child\" data-id=\"47476d6c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-77dcce81 elementor-widget elementor-widget-heading\" data-id=\"77dcce81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Standards<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2e6589af elementor-widget elementor-widget-text-editor\" data-id=\"2e6589af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>MSS SP-83 (per project spec); end connections per applicable standard<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47f28ede e-con-full e-flex e-con e-child\" data-id=\"47f28ede\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7356e1ed e-con-full e-flex e-con e-child\" data-id=\"7356e1ed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-347aa597 elementor-widget elementor-widget-heading\" data-id=\"347aa597\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Pressure Class<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34f8e7b1 elementor-widget elementor-widget-text-editor\" data-id=\"34f8e7b1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Class 3000 (higher class \/ rating available as specified)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-21936e65 e-con-full e-flex e-con e-child\" data-id=\"21936e65\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6ee8dd0f elementor-widget elementor-widget-heading\" data-id=\"6ee8dd0f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Union Type<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55eca8eb elementor-widget elementor-widget-text-editor\" data-id=\"55eca8eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Ground Joint Union \/ Conical Seat Union (as specified)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-79c78343 e-con-full e-flex e-con e-child\" data-id=\"79c78343\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1591f91f elementor-widget elementor-widget-heading\" data-id=\"1591f91f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Materials<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4e4bcadb elementor-widget elementor-widget-text-editor\" data-id=\"4e4bcadb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Stainless 304\/316L common; carbon steel \/ alloy options on request<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6ddc3bfa e-con-full e-flex e-con e-child\" data-id=\"6ddc3bfa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-339deb7d elementor-widget elementor-widget-heading\" data-id=\"339deb7d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Documentation &amp; Inspection\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da66e elementor-widget elementor-widget-text-editor\" data-id=\"da66e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>EN 10204 3.1 MTC; dimensional inspection; PMI for stainless upon request; NDT as specified<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4096c462 e-con-full e-flex e-con e-parent\" data-id=\"4096c462\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-887d131 e-con-full e-flex e-con e-child\" data-id=\"887d131\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40c7a013 e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"40c7a013\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;tabs_justify_horizontal&quot;:&quot;center&quot;,&quot;tabs_justify_horizontal_mobile&quot;:&quot;start&quot;,&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"1086824467\" aria-label=\"Onglets. Ouvrez des \u00e9l\u00e9ments avec Enter ou Space, fermez-les avec Escape et naviguez \u00e0 l&#039;aide des touches fl\u00e9ch\u00e9es.\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-10868244671\" data-tab-title-id=\"e-n-tab-title-10868244671\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-10868244671\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tFeatures &amp; Benefits\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-10868244672\" data-tab-title-id=\"e-n-tab-title-10868244672\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-10868244672\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tDimension Table\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-10868244673\" data-tab-title-id=\"e-n-tab-title-10868244673\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-10868244673\" style=\"--n-tabs-title-order: 3;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tProduct Assembly\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div id=\"e-n-tab-content-10868244671\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-10868244671\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-3d3997b3 e-flex e-con-boxed e-con e-child\" data-id=\"3d3997b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-67310b2e e-con-full e-flex e-con e-child\" data-id=\"67310b2e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-68578446 elementor-widget elementor-widget-html\" data-id=\"68578446\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<section class=\"sunhy-tab-section\">\r\n  <h2>MSS SP-83 Unions | Forged Pipe Unions for High-Pressure Service<\/h2>\r\n  <p>\r\n    SUNHY supplies MSS SP-83 unions designed for maintenance-friendly piping. Compared with permanent welded joints,\r\n    unions allow fast disassembly for inspection, instrument replacement, spool changes, and tight-space repairs\u2014\r\n    without reworking long pipe runs.\r\n  <\/p>\r\n  <p>\r\n    Available as threaded (NPT\/BSPT) or socket weld (SW) configurations as specified, with common stainless 304\/316L\r\n    options and project-level documentation for site acceptance.\r\n  <\/p>\r\n\r\n  <h3>Key Advantages<\/h3>\r\n  <ul>\r\n    <li><strong>Maintenance-Ready Connection<\/strong> \u2014 quick break-and-make design for frequent access points.<\/li>\r\n    <li><strong>High-Pressure Piping Use<\/strong> \u2014 compact forged construction for demanding service conditions.<\/li>\r\n    <li><strong>Threaded or SW Options<\/strong> \u2014 NPT\/BSPT threads or socket weld ends as specified on BOM.<\/li>\r\n    <li><strong>Material Options<\/strong> \u2014 304\/316L common; other grades available on request.<\/li>\r\n    <li><strong>Traceability Support<\/strong> \u2014 EN 10204 3.1 MTC available; PMI\/NDT per project requirement.<\/li>\r\n  <\/ul>\r\n\r\n  <h3>Typical Applications<\/h3>\r\n  <ul>\r\n    <li>Oil &amp; gas skids, chemical processing lines, utilities, and general industrial piping<\/li>\r\n    <li>Instrument take-offs, pump packages, filter housings, and maintenance sections<\/li>\r\n  <\/ul>\r\n<\/section>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-10868244672\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-10868244672\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\" elementor-element elementor-element-7b66432b e-con-full e-flex e-con e-child\" data-id=\"7b66432b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7f57c2d1 e-flex e-con-boxed e-con e-child\" data-id=\"7f57c2d1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-507d023c elementor-widget elementor-widget-html\" data-id=\"507d023c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<section class=\"sunhy-tab-section\">\r\n  <h2>MSS SP-83 Union Dimensions | What to Specify on Your RFQ<\/h2>\r\n  <p>\r\n    For procurement and fabrication, union selection is driven by <strong>size<\/strong>, <strong>pressure class<\/strong>,\r\n    <strong>end connection<\/strong>, and <strong>seat\/joint type<\/strong>. To avoid mismatches, confirm these items directly\r\n    on the BOM and project drawing before ordering.\r\n  <\/p>\r\n\r\n  <h3>Quick Checklist (Recommended)<\/h3>\r\n  <ul>\r\n    <li><strong>Nominal Size:<\/strong> 1\/4&quot;\u20132&quot; commonly (other sizes on request)<\/li>\r\n    <li><strong>Pressure Class:<\/strong> Class 3000 (higher rating as specified)<\/li>\r\n    <li><strong>End Connection:<\/strong> NPT \/ BSPT or Socket Weld (SW)<\/li>\r\n    <li><strong>Union Type:<\/strong> Ground Joint \/ Conical Seat (as specified)<\/li>\r\n    <li><strong>Material:<\/strong> 304 \/ 316L common; other grades on request<\/li>\r\n  <\/ul>\r\n\r\n  <h3>Dimension Notes (Engineering Use)<\/h3>\r\n  <ul>\r\n    <li><strong>End-to-End<\/strong> and <strong>nut\/hex clearance<\/strong> should match installation space.<\/li>\r\n    <li><strong>Seat type<\/strong> affects sealing method and maintenance procedure.<\/li>\r\n    <li>Final dimensions follow <strong>MSS SP-83<\/strong> and\/or the <strong>approved project drawing<\/strong>.<\/li>\r\n  <\/ul>\r\n<\/section>\r\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-10868244673\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-10868244673\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\" elementor-element elementor-element-5de66db3 e-con-full e-flex e-con e-child\" data-id=\"5de66db3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7c545710 e-flex e-con-boxed e-con e-child\" data-id=\"7c545710\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24e4a854 elementor-widget elementor-widget-html\" data-id=\"24e4a854\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<section class=\"sunhy-tab-section\">\r\n  <h2>Product Assembly | How to Install MSS SP-83 Unions<\/h2>\r\n  <p>\r\n    Correct fit-up and tightening practice are critical for leak performance. Final procedures should follow your project\r\n    spec and be executed by qualified personnel.\r\n  <\/p>\r\n\r\n  <h3>Threaded Union (NPT \/ BSPT) \u2014 Recommended Steps<\/h3>\r\n  <ol>\r\n    <li><strong>Verify spec<\/strong> \u2014 confirm size, thread type (NPT\/BSPT), pressure class, material, and union type.<\/li>\r\n    <li><strong>Inspect threads &amp; seat<\/strong> \u2014 ensure no dents, burrs, or debris on sealing surfaces.<\/li>\r\n    <li><strong>Apply sealant<\/strong> \u2014 use approved thread sealant\/tape per site practice (do not contaminate the seat).<\/li>\r\n    <li><strong>Align piping<\/strong> \u2014 avoid forced alignment; misalignment can cause leakage and galling.<\/li>\r\n    <li><strong>Tighten correctly<\/strong> \u2014 tighten the union nut evenly; do not over-torque beyond your procedure.<\/li>\r\n    <li><strong>Pressure test<\/strong> \u2014 perform leak check per project test plan.<\/li>\r\n  <\/ol>\r\n\r\n  <h3>Socket Weld Union (SW) \u2014 Recommended Steps<\/h3>\r\n  <ol>\r\n    <li><strong>Confirm WPS<\/strong> \u2014 welding procedure and welder qualification per project requirement.<\/li>\r\n    <li><strong>Fit-up<\/strong> \u2014 ensure stable insertion depth and consistent root gap as required by your WPS.<\/li>\r\n    <li><strong>Tack &amp; weld<\/strong> \u2014 control heat input; protect stainless surface condition if applicable.<\/li>\r\n    <li><strong>Post-weld checks<\/strong> \u2014 dimensional verification; NDT\/PMI if specified.<\/li>\r\n  <\/ol>\r\n\r\n  <p><strong>QC Options:<\/strong> EN 10204 3.1 MTC available; PMI for stainless upon request; NDT as specified.<\/p>\r\n<\/section>\r\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-15e22abe e-flex e-con-boxed e-con e-parent\" data-id=\"15e22abe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-14432d00 elementor-widget elementor-widget-heading\" data-id=\"14432d00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related Products<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7220ad83 elementor-arrows-position-outside elementor-pagination-type-bullets elementor-pagination-position-outside elementor-widget elementor-widget-n-carousel\" data-id=\"7220ad83\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;carousel_items&quot;:[{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;0a319fa&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;4ffa64e&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;d089ffd&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;be92983&quot;},{&quot;slide_title&quot;:&quot;Slide #1&quot;,&quot;_id&quot;:&quot;b1e9397&quot;}],&quot;slides_to_show&quot;:&quot;5&quot;,&quot;slides_to_scroll&quot;:&quot;1&quot;,&quot;slides_to_show_tablet&quot;:&quot;3&quot;,&quot;slides_to_show_mobile&quot;:&quot;1&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;autoplay_speed&quot;:5000,&quot;pause_on_hover&quot;:&quot;yes&quot;,&quot;pause_on_interaction&quot;:&quot;yes&quot;,&quot;infinite&quot;:&quot;yes&quot;,&quot;speed&quot;:500,&quot;offset_sides&quot;:&quot;none&quot;,&quot;arrows&quot;:&quot;yes&quot;,&quot;pagination&quot;:&quot;bullets&quot;,&quot;image_spacing_custom&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;image_spacing_custom_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;image_spacing_custom_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-carousel.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-carousel swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"swiper-wrapper\" aria-live=\"off\">\n\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"1\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 sur 5\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e011763 e-flex e-con-boxed e-con e-child\" data-id=\"e011763\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30068bec elementor-widget elementor-widget-image-box\" data-id=\"30068bec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Butt Weld Tee (Equal \/ Reducing)<\/h3><p class=\"elementor-image-box-description\">For branch connections in welded piping spools.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"2\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"2 sur 5\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-74c62d0f e-flex e-con-boxed e-con e-child\" data-id=\"74c62d0f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62f2bf11 elementor-widget elementor-widget-image-box\" data-id=\"62f2bf11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Concentric Reducer<\/h3><p class=\"elementor-image-box-description\">Smooth centerline transition for vertical lines and pumps.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"3\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"3 sur 5\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-11b781e7 e-flex e-con-boxed e-con e-child\" data-id=\"11b781e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-430ab83f elementor-widget elementor-widget-image-box\" data-id=\"430ab83f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Eccentric Reducer<\/h3><p class=\"elementor-image-box-description\">Flat side design to reduce air pockets in horizontal piping.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"4\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"4 sur 5\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2b76dda7 e-flex e-con-boxed e-con e-child\" data-id=\"2b76dda7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-36a1a7ec elementor-widget elementor-widget-image-box\" data-id=\"36a1a7ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Butt Weld End Cap<\/h3><p class=\"elementor-image-box-description\">Clean closure for pipe ends\u2014ideal for test spools and headers.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" data-slide=\"5\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"5 sur 5\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-172eccce e-flex e-con-boxed e-con e-child\" data-id=\"172eccce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-32c1ec40 elementor-widget elementor-widget-image-box\" data-id=\"32c1ec40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">Stub End (Lap Joint)<\/h3><p class=\"elementor-image-box-description\">Common with lap joint flanges for frequent disassembly service.<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\" aria-label=\"Pr\u00e9c\u00e9dent\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\" aria-label=\"Suivant\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t\t\t<div class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-71d05388 e-flex e-con-boxed e-con e-parent\" data-id=\"71d05388\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2120c56d e-con-full e-flex e-con e-child\" data-id=\"2120c56d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-17cc9981 elementor-widget elementor-widget-heading\" data-id=\"17cc9981\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-743b5faa elementor-widget__width-initial elementor-widget elementor-widget-toggle\" data-id=\"743b5faa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"toggle.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-1951\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1951\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">What is an MSS SP-83 Union?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1951\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1951\"><p><b data-path-to-node=\"7,0\" data-index-in-node=\"26\">MSS SP-83<\/b> is the standard practice developed by the Manufacturers Standardization Society for <b data-path-to-node=\"7,0\" data-index-in-node=\"120\">Class 3000<\/b> and <b data-path-to-node=\"7,0\" data-index-in-node=\"135\">Class 6000<\/b> pipe unions. It covers carbon and stainless steel unions in <b data-path-to-node=\"7,0\" data-index-in-node=\"206\">Socket Weld (SW)<\/b> and <b data-path-to-node=\"7,0\" data-index-in-node=\"227\">Threaded (NPT)<\/b> connections. Unlike standard fittings, MSS SP-83 unions feature a three-piece design with a <b data-path-to-node=\"7,0\" data-index-in-node=\"334\">metal-to-metal &#8220;ball-to-cone&#8221; seat<\/b>, allowing for pipe disassembly without cutting, specifically designed for high-pressure and high-temperature industrial applications.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-1952\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1952\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">What sizes are MSS SP-83 Unions available in?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1952\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1952\"><p data-path-to-node=\"8\"><span class=\"citation-8\">MSS SP-83 unions are standardized for nominal pipe sizes (NPS) ranging from <\/span><b data-path-to-node=\"8\" data-index-in-node=\"76\"><span class=\"citation-8\">1\/8 inch to 3 inches<\/span><\/b><span class=\"citation-8 citation-end-8\"> (DN6 to DN80).<\/span><\/p><ul data-path-to-node=\"9\"><li><p data-path-to-node=\"9,0,0\"><b data-path-to-node=\"9,0,0\" data-index-in-node=\"0\">Standard Range:<\/b> 1\/8&#8243;, 1\/4&#8243;, 3\/8&#8243;, 1\/2&#8243;, 3\/4&#8243;, 1&#8243;, 1-1\/4&#8243;, 1-1\/2&#8243;, 2&#8243;, 2-1\/2&#8243;, and 3&#8243;.<\/p><\/li><li><p data-path-to-node=\"9,1,0\"><b data-path-to-node=\"9,1,0\" data-index-in-node=\"0\">Reducing Sizes:<\/b> The standard also covers reducing unions, where the connection ends are of different sizes (e.g., 1&#8243; x 3\/4&#8243;), though these are less common in stock.<\/p><\/li><\/ul><p data-path-to-node=\"10\"><b data-path-to-node=\"10\" data-index-in-node=\"0\">Note:<\/b> The physical dimensions (length and nut width) increase significantly between Class 3000 and Class 6000 ratings to accommodate higher pressures.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-1953\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1953\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">What materials are MSS SP-83 Unions made from?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1953\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1953\"><p data-path-to-node=\"12\">These unions are forged from materials compatible with ASTM piping standards. The most common materials include:<\/p><ul data-path-to-node=\"13\"><li><p data-path-to-node=\"13,0,0\"><b data-path-to-node=\"13,0,0\" data-index-in-node=\"0\"><span class=\"citation-7\">Carbon Steel:<\/span><\/b> <b data-path-to-node=\"13,0,0\" data-index-in-node=\"14\"><span class=\"citation-7\">ASTM A105<\/span><\/b><span class=\"citation-7\"> (Standard) or <\/span><b data-path-to-node=\"13,0,0\" data-index-in-node=\"38\"><span class=\"citation-7\">A105N<\/span><\/b><span class=\"citation-7 citation-end-7\"> (Normalized for better low-temperature toughness).<\/span><\/p><div class=\"source-inline-chip-container ng-star-inserted\">\u00a0<\/div><\/li><li><p data-path-to-node=\"13,1,0\"><b data-path-to-node=\"13,1,0\" data-index-in-node=\"0\">Stainless Steel:<\/b> <b data-path-to-node=\"13,1,0\" data-index-in-node=\"17\">ASTM A182<\/b> grades such as <b data-path-to-node=\"13,1,0\" data-index-in-node=\"42\">F304\/F304L<\/b> and <b data-path-to-node=\"13,1,0\" data-index-in-node=\"57\">F316\/F316L<\/b> for corrosion resistance.<\/p><\/li><li><p data-path-to-node=\"13,2,0\"><b data-path-to-node=\"13,2,0\" data-index-in-node=\"0\">Alloy Steel:<\/b> <b data-path-to-node=\"13,2,0\" data-index-in-node=\"13\">ASTM A182 F11<\/b> or <b data-path-to-node=\"13,2,0\" data-index-in-node=\"30\">F22<\/b> for high-temperature steam applications.<\/p><\/li><li><p data-path-to-node=\"13,3,0\"><b data-path-to-node=\"13,3,0\" data-index-in-node=\"0\"><span class=\"citation-6\">Nickel Alloys:<\/span><\/b><span class=\"citation-6 citation-end-6\"> Alloys like Monel or Inconel for extreme chemical environments.<\/span><\/p><\/li><\/ul><p data-path-to-node=\"14\"><b data-path-to-node=\"14\" data-index-in-node=\"0\">Selection Tip:<\/b> Always match the union material to the pipe material (e.g., A105 union for A106 pipe) to prevent galvanic corrosion and ensure uniform thermal expansion.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-1954\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1954\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">How are MSS SP-83 Unions installed?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1954\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1954\"><p data-path-to-node=\"16\">Installation depends on the connection type\u2014<b data-path-to-node=\"16\" data-index-in-node=\"44\">Threaded (NPT)<\/b> or <b data-path-to-node=\"16\" data-index-in-node=\"62\">Socket Weld (SW)<\/b>.<\/p><p data-path-to-node=\"17\"><b data-path-to-node=\"17\" data-index-in-node=\"0\">For Threaded Connections:<\/b><\/p><ol start=\"1\" data-path-to-node=\"18\"><li><p data-path-to-node=\"18,0,0\"><b data-path-to-node=\"18,0,0\" data-index-in-node=\"0\">Clean:<\/b> Ensure threads are free of debris.<\/p><\/li><li><p data-path-to-node=\"18,1,0\"><b data-path-to-node=\"18,1,0\" data-index-in-node=\"0\">Seal:<\/b> Apply a high-quality pipe dope or PTFE tape to the <i data-path-to-node=\"18,1,0\" data-index-in-node=\"57\">pipe threads only<\/i>. <b data-path-to-node=\"18,1,0\" data-index-in-node=\"76\">Warning:<\/b> Do not apply sealant to the internal metal-to-metal seating surface of the union.<\/p><\/li><li><p data-path-to-node=\"18,2,0\"><b data-path-to-node=\"18,2,0\" data-index-in-node=\"0\">Tighten:<\/b> Tighten the nut securely. A &#8220;hammer lug&#8221; nut design allows for final tightening with a hammer in tight spaces.<\/p><\/li><\/ol><p data-path-to-node=\"19\"><b data-path-to-node=\"19\" data-index-in-node=\"0\">For Socket Weld Connections (ASME B31.3 Compliant):<\/b><\/p><ol start=\"1\" data-path-to-node=\"20\"><li><p data-path-to-node=\"20,0,0\"><b data-path-to-node=\"20,0,0\" data-index-in-node=\"0\">Insert:<\/b> Insert the pipe fully into the socket.<\/p><\/li><li><p data-path-to-node=\"20,1,0\"><b data-path-to-node=\"20,1,0\" data-index-in-node=\"0\">Withdraw:<\/b> Mark the pipe and <b data-path-to-node=\"20,1,0\" data-index-in-node=\"28\">withdraw it 1\/16 inch (1.5mm)<\/b> to create an expansion gap.<\/p><\/li><li><p data-path-to-node=\"20,2,0\"><b data-path-to-node=\"20,2,0\" data-index-in-node=\"0\">Weld:<\/b> Perform a fillet weld around the hub. This gap prevents the weld from cracking due to thermal expansion during the welding process.<\/p><\/li><\/ol><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-1955\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1955\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">Are MSS SP-83 Unions suitable for high-pressure systems?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-1955\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1955\"><p data-path-to-node=\"22\"><b data-path-to-node=\"22\" data-index-in-node=\"0\">Yes, they are specifically designed for high pressure.<\/b><\/p><ul data-path-to-node=\"23\"><li><p data-path-to-node=\"23,0,0\"><b data-path-to-node=\"23,0,0\" data-index-in-node=\"0\">Class 3000:<\/b> Rated for approximately <b data-path-to-node=\"23,0,0\" data-index-in-node=\"36\">3000 PSI<\/b> (Working Pressure) and is used with Schedule 80 (Extra Strong) pipe.<\/p><\/li><li><p data-path-to-node=\"23,1,0\"><b data-path-to-node=\"23,1,0\" data-index-in-node=\"0\">Class 6000:<\/b> Rated for approximately <b data-path-to-node=\"23,1,0\" data-index-in-node=\"36\">6000 PSI<\/b> and is used with Schedule 160 pipe.<\/p><\/li><\/ul><p data-path-to-node=\"24\"><b data-path-to-node=\"24\" data-index-in-node=\"0\">Critical Note:<\/b> The actual pressure rating decreases as the operating temperature rises. For example, a carbon steel union rated for 3000 PSI at ambient temperature may only be rated for ~2155 PSI at 700\u00b0F (370\u00b0C). Always consult the pressure-temperature derating charts in the standard before installation.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is an MSS SP-83 Union?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"26\\\">MSS SP-83<\\\/b> is the standard practice developed by the Manufacturers Standardization Society for <b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"120\\\">Class 3000<\\\/b> and <b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"135\\\">Class 6000<\\\/b> pipe unions. It covers carbon and stainless steel unions in <b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"206\\\">Socket Weld (SW)<\\\/b> and <b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"227\\\">Threaded (NPT)<\\\/b> connections. Unlike standard fittings, MSS SP-83 unions feature a three-piece design with a <b data-path-to-node=\\\"7,0\\\" data-index-in-node=\\\"334\\\">metal-to-metal &#8220;ball-to-cone&#8221; seat<\\\/b>, allowing for pipe disassembly without cutting, specifically designed for high-pressure and high-temperature industrial applications.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"What sizes are MSS SP-83 Unions available in?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p data-path-to-node=\\\"8\\\"><span class=\\\"citation-8\\\">MSS SP-83 unions are standardized for nominal pipe sizes (NPS) ranging from <\\\/span><b data-path-to-node=\\\"8\\\" data-index-in-node=\\\"76\\\"><span class=\\\"citation-8\\\">1\\\/8 inch to 3 inches<\\\/span><\\\/b><span class=\\\"citation-8 citation-end-8\\\"> (DN6 to DN80).<\\\/span><\\\/p><ul data-path-to-node=\\\"9\\\"><li><p data-path-to-node=\\\"9,0,0\\\"><b data-path-to-node=\\\"9,0,0\\\" data-index-in-node=\\\"0\\\">Standard Range:<\\\/b> 1\\\/8&#8243;, 1\\\/4&#8243;, 3\\\/8&#8243;, 1\\\/2&#8243;, 3\\\/4&#8243;, 1&#8243;, 1-1\\\/4&#8243;, 1-1\\\/2&#8243;, 2&#8243;, 2-1\\\/2&#8243;, and 3&#8243;.<\\\/p><\\\/li><li><p data-path-to-node=\\\"9,1,0\\\"><b data-path-to-node=\\\"9,1,0\\\" data-index-in-node=\\\"0\\\">Reducing Sizes:<\\\/b> The standard also covers reducing unions, where the connection ends are of different sizes (e.g., 1&#8243; x 3\\\/4&#8243;), though these are less common in stock.<\\\/p><\\\/li><\\\/ul><p data-path-to-node=\\\"10\\\"><b data-path-to-node=\\\"10\\\" data-index-in-node=\\\"0\\\">Note:<\\\/b> The physical dimensions (length and nut width) increase significantly between Class 3000 and Class 6000 ratings to accommodate higher pressures.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"What materials are MSS SP-83 Unions made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p data-path-to-node=\\\"12\\\">These unions are forged from materials compatible with ASTM piping standards. The most common materials include:<\\\/p><ul data-path-to-node=\\\"13\\\"><li><p data-path-to-node=\\\"13,0,0\\\"><b data-path-to-node=\\\"13,0,0\\\" data-index-in-node=\\\"0\\\"><span class=\\\"citation-7\\\">Carbon Steel:<\\\/span><\\\/b> <b data-path-to-node=\\\"13,0,0\\\" data-index-in-node=\\\"14\\\"><span class=\\\"citation-7\\\">ASTM A105<\\\/span><\\\/b><span class=\\\"citation-7\\\"> (Standard) or <\\\/span><b data-path-to-node=\\\"13,0,0\\\" data-index-in-node=\\\"38\\\"><span class=\\\"citation-7\\\">A105N<\\\/span><\\\/b><span class=\\\"citation-7 citation-end-7\\\"> (Normalized for better low-temperature toughness).<\\\/span><\\\/p><div class=\\\"source-inline-chip-container ng-star-inserted\\\">\\u00a0<\\\/div><\\\/li><li><p data-path-to-node=\\\"13,1,0\\\"><b data-path-to-node=\\\"13,1,0\\\" data-index-in-node=\\\"0\\\">Stainless Steel:<\\\/b> <b data-path-to-node=\\\"13,1,0\\\" data-index-in-node=\\\"17\\\">ASTM A182<\\\/b> grades such as <b data-path-to-node=\\\"13,1,0\\\" data-index-in-node=\\\"42\\\">F304\\\/F304L<\\\/b> and <b data-path-to-node=\\\"13,1,0\\\" data-index-in-node=\\\"57\\\">F316\\\/F316L<\\\/b> for corrosion resistance.<\\\/p><\\\/li><li><p data-path-to-node=\\\"13,2,0\\\"><b data-path-to-node=\\\"13,2,0\\\" data-index-in-node=\\\"0\\\">Alloy Steel:<\\\/b> <b data-path-to-node=\\\"13,2,0\\\" data-index-in-node=\\\"13\\\">ASTM A182 F11<\\\/b> or <b data-path-to-node=\\\"13,2,0\\\" data-index-in-node=\\\"30\\\">F22<\\\/b> for high-temperature steam applications.<\\\/p><\\\/li><li><p data-path-to-node=\\\"13,3,0\\\"><b data-path-to-node=\\\"13,3,0\\\" data-index-in-node=\\\"0\\\"><span class=\\\"citation-6\\\">Nickel Alloys:<\\\/span><\\\/b><span class=\\\"citation-6 citation-end-6\\\"> Alloys like Monel or Inconel for extreme chemical environments.<\\\/span><\\\/p><\\\/li><\\\/ul><p data-path-to-node=\\\"14\\\"><b data-path-to-node=\\\"14\\\" data-index-in-node=\\\"0\\\">Selection Tip:<\\\/b> Always match the union material to the pipe material (e.g., A105 union for A106 pipe) to prevent galvanic corrosion and ensure uniform thermal expansion.<\\\/p>\"}},{\"@type\":\"Question\",\"name\":\"How are MSS SP-83 Unions installed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p data-path-to-node=\\\"16\\\">Installation depends on the connection type\\u2014<b data-path-to-node=\\\"16\\\" data-index-in-node=\\\"44\\\">Threaded (NPT)<\\\/b> or <b data-path-to-node=\\\"16\\\" data-index-in-node=\\\"62\\\">Socket Weld (SW)<\\\/b>.<\\\/p><p data-path-to-node=\\\"17\\\"><b data-path-to-node=\\\"17\\\" data-index-in-node=\\\"0\\\">For Threaded Connections:<\\\/b><\\\/p><ol start=\\\"1\\\" data-path-to-node=\\\"18\\\"><li><p data-path-to-node=\\\"18,0,0\\\"><b data-path-to-node=\\\"18,0,0\\\" data-index-in-node=\\\"0\\\">Clean:<\\\/b> Ensure threads are free of debris.<\\\/p><\\\/li><li><p data-path-to-node=\\\"18,1,0\\\"><b data-path-to-node=\\\"18,1,0\\\" data-index-in-node=\\\"0\\\">Seal:<\\\/b> Apply a high-quality pipe dope or PTFE tape to the <i data-path-to-node=\\\"18,1,0\\\" data-index-in-node=\\\"57\\\">pipe threads only<\\\/i>. <b data-path-to-node=\\\"18,1,0\\\" data-index-in-node=\\\"76\\\">Warning:<\\\/b> Do not apply sealant to the internal metal-to-metal seating surface of the union.<\\\/p><\\\/li><li><p data-path-to-node=\\\"18,2,0\\\"><b data-path-to-node=\\\"18,2,0\\\" data-index-in-node=\\\"0\\\">Tighten:<\\\/b> Tighten the nut securely. A &#8220;hammer lug&#8221; nut design allows for final tightening with a hammer in tight spaces.<\\\/p><\\\/li><\\\/ol><p data-path-to-node=\\\"19\\\"><b data-path-to-node=\\\"19\\\" data-index-in-node=\\\"0\\\">For Socket Weld Connections (ASME B31.3 Compliant):<\\\/b><\\\/p><ol start=\\\"1\\\" data-path-to-node=\\\"20\\\"><li><p data-path-to-node=\\\"20,0,0\\\"><b data-path-to-node=\\\"20,0,0\\\" data-index-in-node=\\\"0\\\">Insert:<\\\/b> Insert the pipe fully into the socket.<\\\/p><\\\/li><li><p data-path-to-node=\\\"20,1,0\\\"><b data-path-to-node=\\\"20,1,0\\\" data-index-in-node=\\\"0\\\">Withdraw:<\\\/b> Mark the pipe and <b data-path-to-node=\\\"20,1,0\\\" data-index-in-node=\\\"28\\\">withdraw it 1\\\/16 inch (1.5mm)<\\\/b> to create an expansion gap.<\\\/p><\\\/li><li><p data-path-to-node=\\\"20,2,0\\\"><b data-path-to-node=\\\"20,2,0\\\" data-index-in-node=\\\"0\\\">Weld:<\\\/b> Perform a fillet weld around the hub. This gap prevents the weld from cracking due to thermal expansion during the welding process.<\\\/p><\\\/li><\\\/ol>\"}},{\"@type\":\"Question\",\"name\":\"Are MSS SP-83 Unions suitable for high-pressure systems?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p data-path-to-node=\\\"22\\\"><b data-path-to-node=\\\"22\\\" data-index-in-node=\\\"0\\\">Yes, they are specifically designed for high pressure.<\\\/b><\\\/p><ul data-path-to-node=\\\"23\\\"><li><p data-path-to-node=\\\"23,0,0\\\"><b data-path-to-node=\\\"23,0,0\\\" data-index-in-node=\\\"0\\\">Class 3000:<\\\/b> Rated for approximately <b data-path-to-node=\\\"23,0,0\\\" data-index-in-node=\\\"36\\\">3000 PSI<\\\/b> (Working Pressure) and is used with Schedule 80 (Extra Strong) pipe.<\\\/p><\\\/li><li><p data-path-to-node=\\\"23,1,0\\\"><b data-path-to-node=\\\"23,1,0\\\" data-index-in-node=\\\"0\\\">Class 6000:<\\\/b> Rated for approximately <b data-path-to-node=\\\"23,1,0\\\" data-index-in-node=\\\"36\\\">6000 PSI<\\\/b> and is used with Schedule 160 pipe.<\\\/p><\\\/li><\\\/ul><p data-path-to-node=\\\"24\\\"><b data-path-to-node=\\\"24\\\" data-index-in-node=\\\"0\\\">Critical Note:<\\\/b> The actual pressure rating decreases as the operating temperature rises. For example, a carbon steel union rated for 3000 PSI at ambient temperature may only be rated for ~2155 PSI at 700\\u00b0F (370\\u00b0C). Always consult the pressure-temperature derating charts in the standard before installation.<\\\/p>\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6eab3d6b e-con-full e-flex e-con e-parent\" data-id=\"6eab3d6b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2b910e59 e-flex e-con-boxed e-con e-child\" data-id=\"2b910e59\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c46433f elementor-position-block-end elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"c46433f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<a href=\"#top\" class=\"elementor-icon\" tabindex=\"-1\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-long-arrow-alt-up\" viewBox=\"0 0 256 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M88 166.059V468c0 6.627 5.373 12 12 12h56c6.627 0 12-5.373 12-12V166.059h46.059c21.382 0 32.09-25.851 16.971-40.971l-86.059-86.059c-9.373-9.373-24.569-9.373-33.941 0l-86.059 86.059c-15.119 15.119-4.411 40.971 16.971 40.971H88z\"><\/path><\/svg>\t\t\t\t<\/a>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tBack to Top\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-20160d9c e-flex e-con-boxed e-con e-child\" data-id=\"20160d9c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20007a9e elementor-widget elementor-widget-heading\" data-id=\"20007a9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Contact Us<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78f3ac25 elementor-widget elementor-widget-icon-box\" data-id=\"78f3ac25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tRequest a Quote\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-584b8e2f elementor-button-align-end elementor-mobile-button-align-center elementor-widget elementor-widget-form\" data-id=\"584b8e2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"New Form\" aria-label=\"New Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"7232\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"584b8e2f\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"MSS SP-83 Unions | Forged Pipe Unions | Threaded &amp; 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Socket Weld | Maintenance-Ready Joint SUNHY supplies forged MSS SP-83 pipe unions for high-pressure service where fast disassembly is required for maintenance, inspection, or equipment replacement. Unions provide a reliable break-point without cutting and re-welding long pipe runs. Available in threaded (NPT\/BSPT) or socket weld [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7224,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7232","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/pages\/7232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/comments?post=7232"}],"version-history":[{"count":0,"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/pages\/7232\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/pages\/7224"}],"wp:attachment":[{"href":"https:\/\/sunhyings.com\/fr\/wp-json\/wp\/v2\/media?parent=7232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}