Gravity Check Valves | McMaster-Carr

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164 Products

Check Valves

Plastic Socket-Connect Check Valves

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

9 products

High-Flow Threaded Check Valves

Internal components reduce flow resistance for the maximum possible flow

67 products

Socket-Connect Check Valves

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

10 products

Check Valves with Solder-Socket Fittings

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

7 products

Flange-Mount Check Valves

Sandwich between two ANSI flanges for backflow prevention that adds little weight or space

High-Cycling Threaded Check Valves

Few moving parts to wear out from frequent opening, pulsating flow, and rapid reversal

12 products

Check Valves for Vacuum

Check Valves with Barbed Fittings for Vacuum

Barbs grip onto tubing, providing a secure hold

2 products

Check Valves for Drinking Water

Threaded Check Valves for Drinking Water

Meet NSF/ANSI 61 requirements for drinking water service

11 products

Socket-Connect Check Valves for Drinking Water

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

12 products

Check Valves for Oil and Fuel

Flange-Mount Check Valves for Oil and Fuel

Install between ANSI flanges

6 products

High-Performance Threaded Check Valves for Fuel

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

5 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

Other Products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

5 products