Relief Valves | McMaster-Carr

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System of Measurement

Inlet Pipe Size

For Use With

Aluminum Chloride

Argon/Carbon Dioxide Blend

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

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

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

Pipe Size

Inlet Thread Type

Airflow Capacity

Relief Port Pipe Size

Set Pressure Configuration

Seal Material

Stainless Steel

Valve Function

Back-Pressure Regulation

Flow Adjustment

Pressure Control

Pressure Regulation

Pressure Relief

Vacuum Regulation

Shape

Valve Type

Back-Pressure Regulator

Pressure Regulator

Vacuum Regulator

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

Burst Pressure

Inlet Connection

Push to Connect

Inlet Gender

Actuation

Electric (Solenoid)

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 3,999 psi

4,000 psi or greater

REACH

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

749 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

Vacuum-Regulating Valves

Vacuum-Regulating Valves

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

Air-Exhaust Valves

Air-Exhaust Valves

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

Pipe and Pipe Fittings

Pipe and Pipe Fittings

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

Power Transmission

Safety Lockout Valves

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

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.)