Swagelok® Check and Excess Flow Valves
Swagelok inline check valves come in a range of adjustable and fixed cracking pressures to control back flow in general-service and high-purity applications. Excess flow valves enhance system integrity and safety by eliminating the need for a bypass mechanism.
Check Valves | Designed for fluid flowing in one direction
Excess Flow Valves | Stop the release of excess flow downstream
Swagelok® check valves are designed to allow fluids to flow in one direction only. Our check valves are available in a variety of designs, including poppet, lift, and all-welded versions for use in general-service or high-purity applications, including those featuring medium or high pressures.
Swagelok check valves are available with a variety of end connections and sealing materials, allowing users to find easy-to-integrate solutions compatible with their systems and process media. Certain Swagelok check valves feature all-welded designs to provide reliable containment of system fluid in high-purity applications, and some are composed of ultrahigh-purity fluoropolymer and feature no O-rings, maximizing flow while reducing pressure drop, eliminating no-flow areas, and providing excellent leak integrity.
Swagelok® XS series excess flow valves have a slotted poppet which moves to the tripped position when excess flow occurs downstream, stopping uncontrolled release of system media. They then reset when pressure equalizes. These valves eliminate the need for a complex bypass mechanism while reducing maintenance time.
Learn the differences between cracking pressure and resealing pressure to see if your check valve is working properly.
Check Valve Categories
Excess Flow Valves
Enhance system safety by preventing uncontrolled release of system media if downstream line ruptures with excess flow valves.
High-Purity Welded Check Valves, CW Series
The all-welded design of high-purity welded check valves provides reliable containment of system fluid while the 316L SS body offers enhanced material purity.
Hydrogen Check Valves
Enhance safety in hydrogen applications with Swagelok® hydrogen FK check valves, offering reliable shut-off, unidirectional flow, and high-pressure support.
Lift Check Valves, 50 Series
Rugged, all-stainless steel lift check valves limit reverse flow under pressures up to 6000 psig (413 bar) and temperatures up to 900°F (482°C).
Medium-Pressure Check Valves, CV Series
The medium-pressure check valves are designed for system pressure containment and fluid control to prevent backflow.
Poppet Check Valves, C, CP, CH Series
Browse stainless steel and brass poppet check valves, available with a variety of end connections and adjustable or fixed cracking pressures.
Spare Parts and Accessories
Browse deflector caps and a variety of poppet check valve maintenance accessories—including spring, seal and poppet replacement kits.
Ultrahigh-Purity Polymer Check Valves, CHP Series
Our ultrahigh-purity fluoropolymer check valves meet SEMI Standard F57-0301 and provide low cracking pressure while maximizing flow and reducing pressure drop.
Check Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
최대 사용 압력: 6000 psig (413 bar); 크래킹 압력 조절형 및 고정형; 다양한 연결구; 316 스텐레스강 및 황동 재질
특징: 316 스텐레스강 구조; 537°C (1000°F)까지의 온도; 중압 (MP) 피팅, 크기—1/4 ~ 1 in., 압력 등급—최대 20 000 psig (1378 bar); 고압 (HP) 피팅, 크기—1/4 ~ 9/16 in., 압력 등급—최대 60 000 psig (4134 bar); NACE® MR0175/ISO15156 적합
완전 용접 설계로 시스템 유체의 밀폐를 신뢰할 수 있습니다.; 2 psig (0.14 bar) 정도의 차압이 발생하면 정방향 흐름이 시작됩니다.; 역압이 2 psig (0.14 bar) 미만에서 밸브가 닫힙니다.; 순도가 높은 재질인 316L SS를 몸체로 사용합니다.; 표준 또는 고순도용 표면 조도를 선택할 수 있습니다.; Swagelok® 초고순도 공정 사양 (SC-01)에 따라 세정 처리가 가능합니다.; 튜브 맞대기 용접, 암나사형 VCR® 피팅, 일체형 수나사형 VCR 피팅, 회전식 수나사형 VCR 피팅 및 Swagelok 튜브 피팅 등의 연결 방식을 제공합니다.
Features: Alloy 625, alloy 825, and Alloy 2507 super duplex stainless steel materials; Available for CH4 adn Ch8 series check valves; Working pressures up to 6 000 psig (413 bar); 1/4 to 1/2 in. Swagelok tube fitting or NPT end connections; Fixed cracking pressures: 1 to 25 psi (0.07 to 1.8 bar)
Features: Modified PTFE wetted components meet SEMI Standard F57-0301 for ultrahigh-purity system components; Fine thread flare and Nippon Pillar® Super 300 end connections; Low cracking and reseal pressure
XS 시리즈 최대 사용압력 6000 psig (413bar), 최대 사용온도 204ºC (400ºF), 1/8 ~ 1/2 in. 및 6 ~ 12 mm 연결구, 스텐레스강 구조
Calculate Flow Rate for the Right Valve Selection
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