Threaded Check Valves

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649 Products

About Backflow-Prevention Valves

For use with threaded pipe, these valves are available with NPT, NPTF, BSPP, BSPT, and UNI/UNF (JIC) connections.

Compact Threaded Check Valves

With a shorter end-to-end length than other check valves, these fit in tight spaces.

High-Flow Threaded Check Valves

To achieve the maximum possible flow, internal components are designed to reduce flow resistance.

Plastic Threaded Check Valves

Plastic provides a lightweight alternative to metal.

Compact Plastic Threaded Check Valves

At 1 1/2" long or less, these valves fit in confined spaces.

High-Pressure Threaded Check Valves

Rated for up to twice the pressure of standard check valves, these can withstand pressures up to 3,000 psi.

High-Temperature Threaded Check Valves

The heat-resistant rubber seal withstands temperatures up to 500° F.

High-Cycling Threaded Check Valves

With few moving parts to wear out, these valves withstand frequent opening and closing, pulsating flow, and rapid flow reversal.

Check Valves with Barbed Fittings

Barbs grip onto tubing, providing a secure hold.

Heavy Duty Check Valves with Barbed Fittings

For more durability than plastic barbed check valves, these have a stainless steel body.

Check Valves with Yor-Lok Fittings

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.

Check Valves with Push-to-Connect Fittings

Insert tubing into the fitting—no heat, solder, or flux required.

High-Cycling Check Valves

With internal components that resist wear from frequent operation, these valves can cycle as often as once per second.

Union-Insert Check Valves

To reduce installation time and allow for maintenance without detaching pipe connections, these valves insert into a union fitting.

Easy-to-Install Threaded Check
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

These valves open to allow flow in one direction and close when flow stops or reverses.

Ultra-Chemical-Resistant Threaded Check Valves

The most chemical-resistant check valves in our offering, these have a PFA body to withstand methyl ethyl ketone, sodium hypochlorite, and other extremely harsh chemicals.

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

Insert tubing into the fittings—no heat, solder, or flux required.

Threaded Check Valves for Drinking Water

Body is plastic.

Heavy Duty Threaded Check
Valves for Drinking Water

For more durability than plastic, these valves have a metal body.

Threaded Check Valves for Oil and Fuel

High-Performance Threaded Check Valves for Fuel

These heavy duty valves can withstand pressures up to 1,975 psi and temperatures up to 800° F.

Plastic Threaded Check Valves for Oil and Fuel

Plastic provides a lightweight alternative to metal.

High-Temperature Threaded
Check Valves for Oil and Fuel

For more than twice the temperature rating of standard check valves for oil and fuel, these have a heat-resistant fluoroelastomer seal that can withstand temperatures up to 500° F.

High-Pressure Threaded
Check Valves for Oil and Fuel

Rated for at least four times the pressure of standard check valves for oil and fuel, these are often used in hydraulic applications with pressures up to 3,000 psi.

Threaded Check Valves for Vacuum

Valves have NPT connections for use with threaded pipe.

Check Valves for Steam

To withstand high pressures and temperatures in steam service applications, these valves have a 316 stainless steel body, PTFE ball, and PTFE seal.

Two-Stage Backflow-Prevention Valves

Threaded Two-Stage Backflow-Prevention Valves

Attach these valves with NPT connections to threaded pipe.

Threaded Two-Stage Backflow-Prevention
Valves for Drinking Water

Easy-Maintenance Threaded Two-Stage
Backflow-Prevention Valves for Drinking Water

Integral shutoff valves isolate flow for inline maintenance, and a top-entry cover provides easy access to internal components.

Vacuum-Breaking Valves

Commonly used with irrigation systems and laboratory equipment, these valves have NPT connections.

High-Pressure Vacuum-Breaking Valves

Rated for 12 times the pressure of standard vacuum-breaking valves, these can handle up to 1,500 psi. Connections are NPT.

Vacuum-Breaking Valves with Garden-Hose Fittings

Prevent dirty, contaminated water from backing up into your garden hose line—install these valves between a faucet and a garden hose.

Vacuum-Breaking Valves for Chemicals

A plastic body withstands pH neutralizing, cleaning, and plating solutions containing sodium hydroxide, methyl ethyl ketone, and other harsh chemicals.

Pipeline Flame Arresters

To prevent flashback in flammable gas pipelines, an internal flame-arresting element absorbs the heat from a fire to extinguish the flame.

Oxyacetylene Welding and Cutting

Welding Gas Check Valves for Regulators

Stop the reverse flow of gas in your regulator.

Welding Gas Check Valves for Torches

Stop the reverse flow of gas in your torch.

Welding Gas Flashback Arresters for Regulators

Attach these arresters to the outlet connection of a regulator on a torch that cuts steel up to 11" thick.

Welding Gas Flashback Arresters for Torches

These arresters attach directly to torches that cut steel up to 8" thick.

Arresters for Flammable Vapors

Minimize fire hazard from flammable vapors. Mount arresters on your vent pipe to stop flames from traveling back to your tank.