Safety Relief Valves | McMaster-Carr

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291 Products

Pressure-Relief Valves

Fast-Acting Pressure-Relief Valves

ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Meet ASME Code Section VIII for use with air and inert gas pressure vessels

24 products

Remote-Discharge ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Direct discharge away from your work environment through the relief port

31 products

Fast-Acting Pressure-Relief Valves for Air and Inert Gas

The most basic option for air and inert gas applications

12 products

ASME-Code Fast-Acting Pressure-Relief Valves for Steam

Install in steam power boilers requiring pressure relief above 15 psi

13 products

Corrosion-Resistant ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Stainless steel body to resist corrosion in wet conditions and harsh environments

2 products

ASME-Code Fast-Acting Pressure-Relief Valves for Hot Water

Meet ASME Code Section IV for hot water heaters and boilers

7 products

ASME-Code Fast-Acting Pressure-Relief Valves for Water

Meet ASME Code Section VIII for use with water pressure vessels

4 products

Adjustable Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Change set pressure using four interchangeable springs with different set pressure ranges

1 product

ASME-Code Fast-Acting Pressure-Relief Valves for Cryogenic Fluids

Our only valves that meet ASME Code Section VIII for use with cryogenic pressure vessels

2 products

Fast-Acting Pressure-Relief Valves for Cryogenic Liquids

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

1 product

Corrosion-Resistant Remote-Discharge ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Resist corrosion and direct discharge away from your work environment

3 products

ASME-Code Fast-Acting Pressure-Relief Valves for Low-Pressure Steam

Place in low-pressure steam-heating boilers requiring pressure relief at 15 psi

8 products

Fast-Acting Temperature- and Pressure-Relief Valves for Hot Water

Open when water temperature reaches 210°F or the set pressure

11 products

Large-Diameter Remote-Discharge ASME-Code Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Relieve a large amount of air and meet ASME Code Section VIII

3 products

Fast-Acting Pressure-Relief Valves for Ultra-Low-Pressure Steam

Install in steam-heating boilers requiring pressure relief between 5 and 12 psi

3 products

Large-Diameter Remote-Discharge Fast-Acting Pressure-Relief Valves for Air and Inert Gas

Relieve a large amount of air in systems with a pipe size of 2 or greater

3 products

Other Products

Manual On-Off Valves

Start and stop flow through a line

27 products

Pressure-Relief Discs

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

39 products

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

57 products