Pressure Reliefs | McMaster-Carr

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System of Measurement

Inlet Pipe Size

For Use With

Aluminum Chloride

Argon/Carbon Dioxide Blend

Chlorinated Water

Deionized Water

Ethylene Glycol

Outlet Pressure

0 psi to 10 psi

0 psi to 15 psi

0 psi to 20 psi

0 psi to 25 psi

0 psi to 30 psi

0 psi to 50 psi

0 psi to 60 psi

0 psi to 80 psi

0 psi to 100 psi

0 psi to 125 psi

0 psi to 140 psi

0 psi to 145 psi

0 psi to 150 psi

0 psi to 200 psi

0 psi to 220 psi

Set Pressure

Less than 500 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi or greater

Maximum Inlet Pressure

Less than 500 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

2,000 psi to 3,999 psi

4,000 psi or greater

Body Material

Stainless Steel

Inlet Thread Type

Pipe Size

Relief Port Pipe Size

Airflow Capacity

Set Pressure Configuration

Valve Function

Backflow Prevention

Back-Pressure Regulation

Pressure Regulation

Pressure Relief

Vacuum Regulation

Seal Material

Stainless Steel

Shape

Burst Pressure

Inlet Connection

Push to Connect

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 399° F

400° F to 499° F

500° F or greater

Valve Type

Back-Pressure Regulator

Pressure Regulator

Vacuum Regulator

Inlet Gender

Outlet Pipe Size

Actuation

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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798 Products

Fluid Handling

Pressure-Relief Valves

Pressure-Relief Valves

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

Pressure-Regulating Valves

Pressure-Regulating Valves

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

Pressure-Relief Discs

Pressure-Relief Discs

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

Breather Vents

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

Vacuum-Regulating Valves

Vacuum-Regulating Valves

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

Airlocks

Vent gases out of flasks, carboys, and other containers without letting dust and oxygen in

Vacuum Breakers

Vacuum Breakers

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

Facility and Grounds Maintenance

Air Admittance Valves

Air Admittance Valves

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

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