Pressure Relief Vents | McMaster-Carr

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For Use With

System of Measurement

Inlet Pipe Size

Body Material

Set Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi or greater

Maximum Inlet Pressure

Pipe Size

Inlet Thread Type

Shape

Valve Function

Valve Type

Inlet Connection

Set Pressure Configuration

Actuation

Thread Type

Overall Height

Airflow Capacity

Relief Port

Seal Material

Fitting Connection

Maximum Temperature

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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337 Products

Fluid Handling

Pressure-Relief Valves

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

66 products

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

147 products

Pressure-Relief Discs

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

13 products

Air Vent Valves

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

38 products

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

35 products

Containers, Storage, and Furniture

Drum Vents

Prevent drum failure by releasing pressure and vacuum buildup

7 products

Electrical

Electrical Enclosure Vents

Attach to sealed enclosures so air can flow to equalize temperature and pressure

10 products

Electrical Enclosure Drain Vents

Prevent moisture from getting trapped inside enclosures while letting air flow through

6 products

Electrical Enclosure Drains

Release moisture to keep components dry

4 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