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Check Valve

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

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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.

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Check Valve Categories

Excess Flow Valves

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

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

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

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

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

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

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

Our ultrahigh-purity fluoropolymer check valves meet SEMI Standard F57-0301 and provide low cracking pressure while maximizing flow and reducing pressure drop.

Catálogos de Válvulas Antirretorno

Encuentre información detallada de producto, incluidos materiales de construcción, valores nominales de presión y temperatura, opciones y accesorios.

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Calcular el Caudal para Seleccionar Las Válvulas Correctas

Utilice nuestra calculadora del coeficiente de caudal de válvulas (Cv) para seleccionar una válvula del tamaño adecuado a sus necesidades.

Utilice la Herramienta

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