1/2 Check Valves | McMaster-Carr

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126 Products

Fluid Handling

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

89 products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

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Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

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Flame Arresters

Absorb heat from a fire in your gas pipeline to stop it from traveling back to the gas source

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Power Transmission

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

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Hydraulic Check Valves

Open to allow hydraulic fluid flow in one direction and close when flow stops or reverses

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