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Swagelok® Check 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 stop the release of excess flow downstream, enhancing system integrity and safety.
Check valves are designed to allow fluids to flow in one direction only and are rated for use in medium- and high-pressure applications. The variety of designs available include spring, poppet, lift, and all-welded high-purity check valves for use in a range of situations.
XS series excess flow valves have a slotted poppet which moves to the tripped position when excess flow occurs downstream, then resets when pressure equalizes. They eliminate the need for a complex bypass mechanism while reducing maintenance time.
Categories
![Excess Flow Valves Excess Flow Valves](https://www.swagelok.com/assets/images/sap-content/grid/SS-XSS8.jpg?impolicy=product)
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 High-Purity Welded Check Valves, CW Series](https://www.swagelok.com/assets/images/sap-content/grid/6L-CW4VR4.jpg?impolicy=product)
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.
![Lift Check Valves, 50 Series Lift Check Valves, 50 Series](https://www.swagelok.com/assets/images/sap-content/grid/SS-53S4.jpg?impolicy=product)
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 Medium-Pressure Check Valves, CV Series](https://www.swagelok.com/assets/images/sap-content/grid/91_MediumPressureCheckValves-400x400.jpg?impolicy=product)
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 Poppet Check Valves, C, CP, CH Series](https://www.swagelok.com/assets/images/sap-content/grid/SS-4C-1.jpg?impolicy=product)
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 Spare Parts and Accessories](https://www.swagelok.com/assets/images/sap-content/grid/SS-3K-CH4-EP.jpg?impolicy=product)
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 Ultrahigh-Purity Polymer Check Valves, CHP Series](https://www.swagelok.com/assets/images/sap-content/grid/ultrahigh-puritypolymer-check-valves-chp-400x400.jpg?impolicy=product)
Ultrahigh-Purity Polymer Check Valves, CHP Series
Swagelok offers CHP series UHP fluoropolymer check valves for ultrahigh-purity application back flow control needs.Check Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Features: Working pressures up to 6000 psig (413 bar); Adjustable and fixed cracking pressures; Variety of end connections; 316 stainless steel and brass materials
Swagelok® offers medium- and high-pressure fittings, tubing, valves, and related accessories with temperatures up 1000°F (537°C), pressure ratings up to 60 000 psig (4134 bar) in sizes ranging from 1/4 to to 1 in. for medium-pressure products and 1/4 to 9/16 in. for high-pressure products. NACE® MR0175/ISO15156 compliance is available.
Features: All-welded design provides reliable containment of system fluid; Forward flow starts at less than 2 psig (0.14 bar) pressure differential; Valve closes with less than 2 psig (0.14 bar) back pressure; 316L SS body offers enhanced material purity
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
Rugged, all-stainless steel construction; Reverse flow coefficient less than 0.1 % of forward flow coefficient; No springs or elastomers; Compact size
Stop uncontrolled release of system media if downstream line ruptures. Features: Pressures up to 6000 psig (413 bar); Temperatures up to 400°F (204°C); 1/8 to 1/2 in. and 6 to 12 mm end connections; Stainless steel construction
![Calculateur de coefficient de débit (C<sub>v</sub>) Swagelok pour les vannes](https://www.swagelok.com/assets/images/sap-content/featured-resources/cv-calculator-1400x610.jpg)
Une vanne adaptée peut faire toute la différence
Utilisez notre calculateur de coefficient de débit (Cv) pour choisir une vanne d’une taille adaptée à vos besoins.
Utiliser l’outilDes ressources Swagelok sélectionnées pour vous
![Valve selection for fluid sampling systems](https://www.swagelok.com/assets/images/sap-content/featured-cms-blocks/valve-selection-260x154.jpg)
How to Select the Right Valves for Your Industrial Fluid System
Learn how to apply the practical STAMPED method to select the valves most suited to your industrial fluid or sampling system design applications.
![Réduire les émissions fugitives dans les raffineries et l’industrie chimique](https://www.swagelok.com/assets/images/sap-content/featured-cms-blocks/fugitive-emissions-260x154.jpg)
Réduisez au minimum les coûts associés aux émissions fugitives avec des vannes à faibles émissions
Les émissions fugitives sont une préoccupation croissante dans les raffineries de pétrole et l’industrie chimique. Des vannes certifiées faibles émissions contribueront à protéger votre installation et à préserver les résultats de votre entreprise. Découvrez dans cet article comment ces vannes sont testées et en quoi elles peuvent vous être utiles.
![Shenyang Blower Works](https://www.swagelok.com/assets/images/sap-content/featured-cms-blocks/sbw-group-safety-260x154.jpg)
Une sécurité et une fiabilité accrues pour Shenyang Blower Works Group
Découvrez comment Swagelok Shanghai a aidé Shenyang Blower Works Group Corporation à faire faire des économies à ses clients grâce à des équipements plus fiables, tout en améliorant la sécurité de ses installations et le rendement de sa production.
![étiquette de flexible de vanne](https://www.swagelok.com/assets/images/sap-content/featured-cms-blocks/valve-hose-tag-260x154.jpg)
Améliorer un programme de maintenance en étiquetant les vannes et les flexibles
Découvrez ce que deux spécialistes de Swagelok ont à dire sur la façon dont un système d’étiquetage rigoureux des flexibles et des vannes dans l’ensemble de vos systèmes fluides industriels peut vous aider à simplifier la maintenance et limiter les immobilisations de ces systèmes.