Plastic Relief Valves | McMaster-Carr

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Material

For Use With

System of Measurement

Inlet Pipe Size

Set Pressure

Outlet Pressure

Maximum Inlet Pressure

Less than 500 psi

500 psi to 999 psi

2,000 psi to 3,999 psi

Pipe Size

Inlet Thread Type

Seal Material

Shape

Valve Type

Back-Pressure Regulator

Outlet Pipe Size

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 3,999 psi

Inlet Connection

Valve Function

Back-Pressure Regulation

Thread Type

Actuation

Maximum Temperature

Inlet Gender

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

210 Products

Pressure-Relief Valves

Pressure-Relief Valves for Cryogenic Applications

Withstand the extreme cold of liquid argon, nitrogen, and oxygen

7 products

Compact Pressure-Relief Valves

Install on tanks in low-clearance areas

2 products

Adjustable Inline Pressure-Relief Valves for Chemicals

Install inline and often used with feed pumps for fertilizers and bleach

3 products

Pressure-Relief Valves with Push-to-Connect Fittings for Air

Push-to-connect fittings create a low-pressure seal around plastic and soft metal tubing

4 products

Adjustable Pressure-Relief Valves for Chemicals

Resist chemicals in applications with catalysts, pH buffers, and more

5 products

Fast-Acting Pressure-Relief Valves

Fast-Acting Pressure-Relief Valves for Cryogenic Liquids

Withstand the extreme cold of liquid argon, nitrogen, and oxygen

1 product

Hydraulic Valves

Tamper-Resistant Hydraulic Pressure-Relief Valves

Require a hex key to unlock the locknut and adjust the pressure

1 product

Other Products

Pressure-Regulating Valves

Reduce inlet pressure to a lower outlet pressure to protect sensitive equipment

167 products

Air-Exhaust Valves

Vent or divert exhaust to speed up the operation of air cylinders, actuators, and other equipment

16 products

Air Admittance Valves

Allow air into drain, waste, and vent systems so you don't have to vent plumbing to the outdoors

2 products

Vacuum-Regulating Valves

Control the amount of air that a vacuum pump draws from your system to maintain vacuum levels

2 products