Piston Check Valves | McMaster-Carr

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395 Products

Check Valves

Check Valves for Oil and Fuel

High-Performance Threaded Check Valves for Fuel

Withstand pressures up to 1,975 psi and temperatures up to 800° F

6 products

Socket-Connect Check Valves for Oil and Fuel

Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection

3 products

Threaded Check Valves for Oil and Fuel

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

18 products

High-Temperature Threaded Check Valves for Oil and Fuel

A fluoroelastomer seal withstands temperatures up to 500° F

6 products

Plastic Threaded Check Valves for Oil and Fuel

Plastic provides a lightweight alternative to metal

4 products

Check Valves

Threaded Check Valves

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

101 products

Butt-Weld Check Valves

Weld to unthreaded pipe for a smooth, flush connection that provides maximum flow

5 products

Compact Flange-Mount Check Valves

Less than half the length of other flange-mount check valves for limited-clearance pipelines

8 products

Clear-View Socket-Connect Check Valves

Inspect flow and debris accumulation through the transparent valve body

6 products

High-Pressure Threaded Check Valves

Rated for up to twice the pressure of standard check valves

6 products

Check Valves with Yor-Lok Fittings

Two sleeves give the fittings extra gripping power

18 products

Plastic Threaded Check Valves

Plastic provides a lightweight alternative to metal

4 products

Heavy Duty Check Valves with Barbed Fittings

A stainless steel body makes these more durable than plastic barbed check valves

15 products

Union-Insert Check Valves

Reduce installation time and allow for maintenance without detaching pipe connections

8 products

Check Valves with Push-to-Connect Fittings

Insert tubing into the fitting without needing heat, solder, or flux

60 products

Check Valves with Barbed Fittings

Barbs grip onto tubing, providing a secure hold

24 products

High-Temperature Threaded Check Valves

The rubber seal withstands temperatures up to 500° F

12 products

Compact Plastic Threaded Check Valves

1 1/2" long or less so they fit in confined spaces

5 products

Check Valves for Drinking Water

Heavy Duty Threaded Check Valves for Drinking Water

The metal body makes these more durable than plastic valves for drinking water

11 products

Socket-Connect Check Valves for Drinking Water

Bond to unthreaded pipe with primer and cement for a permanent, leak-tight connection

6 products

Check Valves with Push-to-Connect Fittings for Drinking Water

Insert tubing into the fitting without needing heat, solder, or flux

8 products

Threaded Check Valves for Drinking Water

Meet NSF/ANSI 61 requirements for drinking water service

6 products

Check Valves with Solder-Socket Fittings for Drinking Water

Solder to copper tubing for a permanent, leak-tight connection

4 products

Check Valves for Harsh Chemicals

Socket-Connect Check Valves for Harsh Chemicals

Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection

11 products

Check Valves with Push-to-Connect Fittings for Harsh Chemicals

Insert tubing into the fitting without needing heat, solder, or flux

1 product

Ultra-Chemical-Resistant Threaded Check Valves

A PFA body withstands methyl ethyl ketone, sodium hypochlorite, and other harsh chemicals

5 products

Clear-View Socket-Connect Check Valves for Harsh Chemicals

Inspect flow and debris accumulation through the transparent valve body

3 products

Check Valves for Food and Beverage

Check Valves with Sanitary Quick-Clamp Fittings for Food and Beverage

Maintain sanitary standards in food, beverage, and dairy applications

24 products

Insert Check Valves with Sanitary Quick-Clamp Fittings for Food and Beverage

Fit into standard sanitary quick-clamp fittings

5 products

Other Products

Vacuum Breakers

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

2 products