{"product_id":"4-fig-206-butt-weld-sch-xh-hammer-union-low-pressure-flowline-fitting","title":"4\" Fig 206 Butt Weld (Sch XH) Hammer Union – Low-Pressure Flowline Fitting","description":"\u003cp data-path-to-node=\"4\"\u003eThe 4\" Figure 206 Butt Weld Schedule XH Hammer Union is a massive, highly reliable flow control assembly engineered for permanent, ultra-high-volume fluid routing in demanding low-to-medium pressure industrial and oilfield applications. Rated for a 2,000 PSI Cold Working Pressure (CWP), this robust hammer union provides a fast-makeup, highly secure connection between welded 4-inch piping systems. It is uniquely designed to combine the enhanced sealing capabilities of the Figure 206 O-ring design with the structural rigidity and superior erosion resistance of large-bore Extra Heavy (Sch XH) welded pipework.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eUnlike threaded unions, this massive assembly features precision-machined Butt Weld ends designed to seamlessly integrate with standard 4-inch Schedule XH pipe dimensions. This allows for a permanent, full-penetration welded integration into pipework, completely eliminating the risk of thread-related leaks, galling, or loosening caused by continuous line vibration on large-scale fluid spreads. The Extra Heavy (XH) profile provides superior wall thickness, making it exceptionally well-suited for high-capacity abrasive mud systems and corrosive fluid transfers where internal wear is a primary concern.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eManufactured from high-strength industrial-grade forged steel, the Figure 206 union utilizes a dual-sealing mechanism. The primary metal-to-metal seating surface is powerfully reinforced by a resilient elastomeric O-ring embedded directly into the male sub. This O-ring effectively fills microscopic imperfections and guarantees a bubble-tight seal even in the presence of mildly abrasive fluids or slight pipe misalignments. The heavy-duty wing nut allows for rapid, tool-free assembly and dismantling of massive permanent welded spools in the field, critically reducing maintenance and rig-up times.\u003c\/p\u003e\n\u003cp data-path-to-node=\"7\"\u003e\u003cb data-path-to-node=\"7\" data-index-in-node=\"0\"\u003eFeatures \u0026amp; Benefits\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003e2,000 PSI Pressure Rating:\u003c\/b\u003e Engineered to safely manage continuous fluid transfer in standard low-pressure systems with a reliable 2,000 PSI Cold Working Pressure (CWP) rating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eButt Weld Connection (Sch XH):\u003c\/b\u003e Precision-beveled ends designed for massive Schedule XH (Extra Heavy) pipe provide permanent welded connections with superior resistance to abrasive erosion and continuous vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eSecondary O-Ring Seal:\u003c\/b\u003e Features an elastomeric O-ring embedded in the male sub, providing an enhanced secondary seal that ensures leak-free performance against corrosive and abrasive fluids.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eUltra-High Flow Capacity:\u003c\/b\u003e The massive 4-inch nominal bore easily accommodates the immense fluid volumes required for large-scale utility and massive mud mixing operations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,4,0\"\u003e\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eDual Sealing Mechanism:\u003c\/b\u003e Combines traditional metal-to-metal seating with a resilient O-ring to ensure dependable pressure containment across large surface areas.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"8,5,0\"\u003e\u003cb data-path-to-node=\"8,5,0\" data-index-in-node=\"0\"\u003eRapid Spool Makeup:\u003c\/b\u003e The robust wing nut allows for quick, ultra-secure connections and disconnections between permanent welded, large-bore pipe spools in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eSpecifications \u0026amp; Technical Details\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable data-path-to-node=\"10\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,0,0\"\u003e\u003cb data-path-to-node=\"10,1,0,0\" data-index-in-node=\"0\"\u003eComponent Type\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,1,0\"\u003eHammer Union Assembly\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,0,0\"\u003e\u003cb data-path-to-node=\"10,2,0,0\" data-index-in-node=\"0\"\u003eUnion Figure Standard\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,1,0\"\u003eFigure 206 (Fig 206)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,0,0\"\u003e\u003cb data-path-to-node=\"10,3,0,0\" data-index-in-node=\"0\"\u003eNominal Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003e4\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,0,0\"\u003e\u003cb data-path-to-node=\"10,4,0,0\" data-index-in-node=\"0\"\u003eEnd Connection\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003eButt Weld (BW)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,0,0\"\u003e\u003cb data-path-to-node=\"10,5,0,0\" data-index-in-node=\"0\"\u003ePipe Schedule Compatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003eSchedule XH (Extra Heavy)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,0,0\"\u003e\u003cb data-path-to-node=\"10,6,0,0\" data-index-in-node=\"0\"\u003eMaximum Working Pressure\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,1,0\"\u003e2,000 PSI CWP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,0,0\"\u003e\u003cb data-path-to-node=\"10,7,0,0\" data-index-in-node=\"0\"\u003eSealing Mechanism\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,1,0\"\u003eMetal-to-Metal with Secondary O-Ring\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,8,0,0\"\u003e\u003cb data-path-to-node=\"10,8,0,0\" data-index-in-node=\"0\"\u003eBody Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,8,1,0\"\u003eHigh-Strength Forged Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,9,0,0\"\u003e\u003cb data-path-to-node=\"10,9,0,0\" data-index-in-node=\"0\"\u003eTypical Applications\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,9,1,0\"\u003ePermanent massive mud lines, abrasive slurry transfer, corrosive fluid piping\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-path-to-node=\"11\"\u003e\u003cb data-path-to-node=\"11\" data-index-in-node=\"0\"\u003eApplications\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"11\"\u003eThis large-bore 4\" Figure 206 Schedule XH butt weld hammer union is an essential component for ultra-high-volume, abrasive, or corrosive fluid systems where permanent, heavy-walled pipework is strictly required. Typical applications include the fabrication of massive permanent mud lines, abrasive slurry and large-scale chemical transfer networks, bulk storage tank tie-ins, welded heavy-duty pump suction routing, and general industrial fluid transfer where rapid break-out capability and enhanced O-ring sealing are critical.\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eQuality Assurance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"12\"\u003eEach hammer union assembly undergoes rigorous quality control protocols, including precision dimensional verification of the exceptionally thick weld bevels, exact O-ring groove inspection, and full material traceability (MTRs), ensuring complete structural integrity, safe pressure containment, and reliable field performance.\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eRequest a Quote\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e📞 +1 405 666 5011\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e📧 seo@blazess.com\u003c\/p\u003e","brand":"Blaze Sales \u0026 Service","offers":[{"title":"Default Title","offer_id":48331373904117,"sku":"HU-4206XH","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/5785\/1637\/files\/4Fig206ButtWeldSchXHHammerUnionFlowlineFittings.png?v=1782741233","url":"https:\/\/blazess.com\/zh\/products\/4-fig-206-butt-weld-sch-xh-hammer-union-low-pressure-flowline-fitting","provider":"Blaze Sales \u0026 Service","version":"1.0","type":"link"}