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Check Valves
Permit flow in only one direction by closing when flow stops or reverses
Check Valves
Threaded Check Valves
119 products
For use with threaded pipe, these valves are available with NPT, NPTF, BSPP, BSPT, and UNI/UNF (JIC) connections.
Compact Threaded Check Valves
18 products
With a shorter end-to-end length than other check valves, these fit in tight spaces.
High-Flow Threaded Check Valves
67 products
To achieve the maximum possible flow, internal components are designed to reduce flow resistance.
Compact Plastic Threaded Check Valves
5 products
At 1 1/2" long or less, these valves fit in confined spaces.
Plastic Threaded Check Valves
10 products
Plastic provides a lightweight alternative to metal.
High-Pressure Threaded Check Valves
18 products
Rated for up to twice the pressure of standard check valves, these can withstand pressures up to 3,000 psi.
High-Cycling Threaded Check Valves
12 products
With few moving parts to wear out, these valves withstand frequent opening and closing, pulsating flow, and rapid flow reversal.
High-Temperature Threaded Check Valves
28 products
The heat-resistant rubber seal withstands temperatures up to 500° F.
Check Valves with Push-to-Connect Fittings
63 products
Insert tubing into the fitting—no heat, solder, or flux required.
Check Valves with Barbed Fittings
71 products
Barbs grip onto tubing, providing a secure hold.
Heavy Duty Check Valves
15 products
with Barbed Fittings For more durability than plastic barbed check valves, these have a stainless steel body.
Compact Flange-Mount Check Valves
8 products
Less than half the end-to-end length of standard flange-mount check valves, these can be installed in pipelines with limited clearance.
Check Valves with Yor-Lok Fittings
18 products
Two sleeves give the fittings extra gripping power. They bite into tubing as you tighten the nut to form a strong seal. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.
High-Cycling Check Valves
32 products
With internal components that resist wear from frequent operation, these valves can cycle as often as once per second.
Flanged Check Valves
7 products
Bolt to ANSI flanges.
Butt-Weld Check Valves
5 products
Weld these valves to unthreaded pipe for a smooth, flush connection that provides maximum flow.
Check Valves with Quick-Turn Fittings
4 products
Also known as luer lock couplings, quick-turn fittings consist of a plug and a socket that connect with a half turn, so you can easily connect and disconnect your line.
Clear-View Socket-Connect Check Valves
6 products
Visually inspect flow and debris accumulation through the transparent valve body.
Union-Insert Check Valves
8 products
To reduce installation time and allow for maintenance without detaching pipe connections, these valves insert into a union fitting.
Check Valves for Harsh Chemicals
Check Valves with Push-to-Connect
1 products
Fittings for Harsh Chemicals Insert tubing into the fittings—no heat, solder, or flux required.
Easy-to-Install Threaded Check
5 products
Valves for Harsh Chemicals To reduce installation time and allow for maintenance without detaching pipe connections, these valves have union fittings.
Threaded Check Valves for Harsh Chemicals
10 products
These valves open to allow flow in one direction and close when flow stops or reverses.