{"product_id":"n-a-fl1rso4x150-slip-on-flange-carbon-steel-4-in-nominal-150-lb-raised-face","title":"FL1RSO4X150 – Slip-On Flange, Carbon Steel, 4 in Nominal, 150 lb, Raised Face","description":"\u003cdiv class=\"nbs-product-description\"\u003e\n\u003cp class=\"nbs-intro\"\u003eNational Boiler Supply supplies the FL1RSO4X150 Slip-On Flange to contractors, facility teams, and purchasing departments. Get fast dispatch, contractor-ready quotes, and order desk support at 850-565-3492.\u003c\/p\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eIt features a ring-shaped construction with a bore slightly larger than the pipe outside diameter, allowing it to slip over the pipe for easier alignment and connection. The flange is typically tack-welded and fillet-welded on both the inside and outside to secure the joint. The flange is intended for use in applications within specified pressure ranges according to industry standards and provides corrosion resistance through its stainless steel material.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConnection Surface: Raised Face for sealing contact with mating surfaces.\u003c\/li\u003e\n\u003cli\u003eClass: 150, indicating the pressure rating.\u003c\/li\u003e\n\u003cli\u003eFlange Outside Diameter: 9 inches.\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Pressure: Rated for operation at up to 150 psi within specified standards.\u003c\/li\u003e\n\u003cli\u003eNominal Pipe Size: 4 inches.\u003c\/li\u003e\n\u003cli\u003eNumber of Bolt Holes: 8.\u003c\/li\u003e\n\u003cli\u003ePipe Fitting Material: Stainless Steel.\u003c\/li\u003e\n\u003cli\u003eStandards: ASME B16.5, ASTM A\/SA-105.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv class=\"nbs-spec-wrap\" style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable class=\"nbs-spec-table\" style=\"width:100%;max-width:100%;border-collapse:collapse;font-size:0.95em;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px 10px;border:1px solid #d9dee5;background:#f4f6f9;width:38%;\"\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;border:1px solid #d9dee5;\"\u003eFL1RSO4X150\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"nbs-b2b-callout\" style=\"border-left:4px solid #1F3A5F;background:#f4f6f9;padding:12px 16px;margin:18px 0 0;\"\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eOEM Part Verification:\u003c\/strong\u003e Confirm part number FL1RSO4X150 against your equipment nameplate or parts list before ordering. Our order desk can cross-check it for you.\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eOrder Desk Support:\u003c\/strong\u003e Call \u003ca href=\"tel:+18505653492\"\u003e850-565-3492\u003c\/a\u003e for formal quotes, lead times, and volume pricing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- NBS_CROSS_LINKS_START --\u003e\n\u003cdiv class=\"nbs-cross-links\" style=\"background:#f4f6f9;border-left:4px solid #1F3A5F;padding:16px 20px;margin:28px 0 0;border-radius:4px;max-width:100%;box-sizing:border-box;overflow-wrap:anywhere;\"\u003e\n\u003ch3 style=\"margin:0 0 10px;color:#1F3A5F;font-size:18px;line-height:1.3;\"\u003eRelated Components \u0026amp; Replacement Parts\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 12px;padding-left:20px;line-height:1.5;\"\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003ca href=\"\/products\/n-a-fl1rso4x250-flange-carbon-steel-slip-on-9-in\" style=\"color:#1F3A5F;font-weight:600;text-decoration:underline;\"\u003eFL1RSO4X250 – Flange, Carbon Steel, Slip-On, 9 in\u003c\/a\u003e \u003cspan style=\"color:#5a6675;font-size:13px;white-space:nowrap;\"\u003e– OEM Part # FL1RSO4X250\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003ca href=\"\/products\/n-a-fl1rso4x3-flange-carbon-steel-slip-on-9-in\" style=\"color:#1F3A5F;font-weight:600;text-decoration:underline;\"\u003eFL1RSO4X3 – Flange, Carbon Steel, Slip-On, 9 in\u003c\/a\u003e \u003cspan style=\"color:#5a6675;font-size:13px;white-space:nowrap;\"\u003e– OEM Part # FL1RSO4X3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003ca href=\"\/products\/n-a-fl1rso5x2-flange-carbon-steel-slip-on-10-in\" style=\"color:#1F3A5F;font-weight:600;text-decoration:underline;\"\u003eFL1RSO5X2 – Flange, Carbon Steel, Slip-On, 10 in\u003c\/a\u003e \u003cspan style=\"color:#5a6675;font-size:13px;white-space:nowrap;\"\u003e– OEM Part # FL1RSO5X2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003ca href=\"\/products\/n-a-fl1rso4x2-flange-carbon-steel-slip-on-9-in\" style=\"color:#1F3A5F;font-weight:600;text-decoration:underline;\"\u003eFL1RSO4X2 – Flange, Carbon Steel, Slip-On, 9 in\u003c\/a\u003e \u003cspan style=\"color:#5a6675;font-size:13px;white-space:nowrap;\"\u003e– OEM Part # FL1RSO4X2\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003ca href=\"\/products\/n-a-fl1rso5x3-flange-carbon-steel-slip-on-10-in\" style=\"color:#1F3A5F;font-weight:600;text-decoration:underline;\"\u003eFL1RSO5X3 – Flange, Carbon Steel, Slip-On, 10 in\u003c\/a\u003e \u003cspan style=\"color:#5a6675;font-size:13px;white-space:nowrap;\"\u003e– OEM Part # FL1RSO5X3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0;color:#5a6675;font-size:13px;line-height:1.5;\"\u003eNeed help confirming a part number or cross-reference? Call our order desk at \u003ca href=\"tel:+18505653492\" style=\"color:#1F3A5F;font-weight:600;white-space:nowrap;\"\u003e850-565-3492\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- NBS_CROSS_LINKS_END --\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":43334595477598,"sku":"FL1RSO4X150","price":100.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/27768a3f-a71b-48fa-a626-c3e31592e83d_54cd575b-c583-43a3-9870-068e12497795.jpg?v=1794526099","url":"https:\/\/nationalboilersupply.com\/products\/n-a-fl1rso4x150-slip-on-flange-carbon-steel-4-in-nominal-150-lb-raised-face","provider":"National Boiler Supply","version":"1.0","type":"link"}