Air Relief Valves | McMaster-Carr

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System of Measurement

Inlet Pipe Size

For Use With

Maximum Inlet Pressure

Less than 250 psi

250 psi to 499 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

Set Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

Inlet Thread Type

Body Material

Airflow Capacity

Relief Port Pipe Size

Valve Function

Shape

Valve Type

Set Pressure Configuration

Actuation

Inlet Connection

Inlet Gender

Seal Material

Maximum Temperature

Relief Port

Overall Height

Relief Port Location

Inlet Connection Port

REACH

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

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403 Products

Fluid Handling

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

236 products

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

39 products

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

38 products

Air-Exhaust Valves

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

68 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

3 products

Facility and Grounds Maintenance

Air Admittance Valves

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

2 products