PVC Check Valves | McMaster-Carr

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121 Products

About Backflow-Prevention Valves

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Check Valves

Plastic Threaded Check Valves

Plastic provides a lightweight alternative to metal.

Check Valves with Barbed Fittings

Barbs grip onto tubing, providing a secure hold.

Check Valves with Push-to-Connect Fittings

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

Plastic Socket-Connect Check Valves

Plastic Socket-Connect Check Valves

Also known as backwater valves, these valves prevent backflow of sewage and wastewater in drain, waste, and vent systems.

Clear-View Socket-Connect Check Valves

Clear-View Socket-Connect Check Valves

Visually inspect flow and debris accumulation through the transparent valve body.

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.

Socket-Connect Check Valves for Harsh Chemicals

Socket-Connect Check Valves for Harsh Chemicals

Clear-View Socket-Connect Check
Valves for Harsh Chemicals

Clear-View Socket-Connect Check Valves for Harsh Chemicals

Visually inspect flow and debris accumulation through the transparent valve body.

Threaded Check Valves for Drinking Water

Body is plastic.

Socket-Connect Check Valves for Drinking Water

Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection.

Vacuum-Breaking Valves for Chemicals

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.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)