{"product_id":"3-fig-1502-flapper-type-check-valve-sour-service-h2s","title":"3\" FIG 1502 Flapper Type Check Valve – Sour Service (H2S)","description":"\u003cp data-path-to-node=\"4\"\u003eThe 3\" FIG 1502 Flapper Type Check Valve for Sour Service is a high-capacity, heavy-duty directional flow control valve engineered specifically to handle the extremely corrosive and hazardous conditions of H2S environments. Built to safely withstand working pressures up to 15,000 PSI (15K CWP), this integral hammer union check valve ensures unidirectional fluid flow and prevents dangerous high-pressure backflow during aggressive, high-volume well servicing operations.\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eOperating in sour gas (H2S) environments exposes flowline iron to the severe risk of Sulfide Stress Cracking (SSC) and rapid material failure. To combat this, the entire valve body and all internal metallic components are manufactured from highly specialized, corrosion-resistant steel alloys. These materials are strictly heat-treated to controlled hardness levels to meet or exceed NACE MR0175 \/ ISO 15156 standards. Additionally, the valve is equipped with premium elastomer seals formulated to resist explosive decompression and chemical breakdown in sour fluids.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eThe flapper mechanism features a hinged clapper that swings completely open when active. In a 3-inch flowline, this creates a massive, full-bore unobstructed passage that significantly reduces turbulence and pressure drop. This full-bore design is critical for safely pumping large volumes of abrasive fluids, heavy cement slurries, and proppant-laden flowback in corrosive environments.\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\"\u003eSour Service Compliant:\u003c\/b\u003e Manufactured from specialized alloys and heat-treated to strict maximum hardness levels in full compliance with NACE MR0175 \/ ISO 15156 for safe H2S operation.\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\"\u003eHigh-Volume, Full-Bore Design:\u003c\/b\u003e The large 3-inch flapper mechanism moves completely out of the fluid path, minimizing turbulence and erosion when pumping massive volumes of abrasive fluids.\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\"\u003eExtreme Pressure Rating:\u003c\/b\u003e The rugged forged steel body is built to safely handle 15,000 PSI cold working pressures in aggressive sour well environments.\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\"\u003eH2S-Resistant Seals:\u003c\/b\u003e Equipped with premium elastomers specifically engineered to withstand harsh chemicals and sour gas without losing sealing integrity.\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\"\u003eIntegral FIG 1502 Connections:\u003c\/b\u003e Features standard 3-inch FIG 1502 hammer union ends (Male x Female) for fast, secure, and leak-free makeup and breakout in the field.\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\"\u003eField Maintainable:\u003c\/b\u003e Designed with a top-entry cover, allowing operators to quickly inspect or replace internal NACE-compliant wear components inline without removing the massive valve body.\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\"\u003eFlapper Type Check Valve\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\"\u003eNominal Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,1,0\"\u003e3 Inch\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\"\u003eEnd Connections\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003eFIG 1502 Hammer Union (Male x Female)\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\"\u003eWorking Pressure\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003e15,000 PSI (15K CWP)\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\"\u003eInternal Mechanism\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003eSpring-Loaded Flapper and Seat\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\"\u003eBody Material\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,1,0\"\u003eNACE Compliant Forged Alloy Steel\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\"\u003eService Application\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,1,0\"\u003eSour Service (H2S)\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\"\u003eIndustry Compliance\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,8,1,0\"\u003eNACE MR0175 \/ ISO 15156\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=\"12\"\u003eThe 3\" FIG 1502 Flapper Type Check Valve for Sour Service is a critical safety asset in high-capacity surface operations where corrosive and abrasive fluids are present. Typical applications include sour gas well testing, high-rate H2S fracturing manifolds, large-bore cementing lines, acidizing jobs, and heavy flowback setups requiring a full-bore flow path and reliable reverse-flow prevention in hazardous environments.\u003c\/p\u003e\n\u003cp data-path-to-node=\"13\"\u003e\u003cb data-path-to-node=\"13\" data-index-in-node=\"0\"\u003eQuality Assurance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"14\"\u003eAll our sour service flapper check valves undergo rigorous metallurgical testing and strict quality control processes. The valve body and metallic internals are verified for proper hardness levels to ensure resistance to Sulfide Stress Cracking. Each unit undergoes strict hydrostatic pressure testing prior to shipment. Full material traceability and NACE certification are available to guarantee unmatched safety and compliance in the field.\u003c\/p\u003e\n\u003cp data-path-to-node=\"15\"\u003e\u003cb data-path-to-node=\"15\" data-index-in-node=\"0\"\u003eRequest a Quote\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"16\"\u003e📞 +1 405 666 5011\u003c\/p\u003e\n\u003cp data-path-to-node=\"16\"\u003e📧 seo@blazess.com\u003c\/p\u003e","brand":"Blaze Sales \u0026 Service","offers":[{"title":"Default Title","offer_id":48148169195765,"sku":"CHE31502FSS","price":1986.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/5785\/1637\/files\/3_FIG_1502_Flapper_Type_Check_Valve_Sour_Service_H2S.png?v=1778766948","url":"https:\/\/blazess.com\/zh\/products\/3-fig-1502-flapper-type-check-valve-sour-service-h2s","provider":"Blaze Sales \u0026 Service","version":"1.0","type":"link"}