ASME Relief Valves | McMaster-Carr

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	Specifications Met Specifications Met

ASME

NSF/ANSI

	Inlet Pipe Size Inlet Pipe Size

	For Use With For Use With

	Valve Function Valve Function

Pressure Relief

Pressure Regulation

	Inlet Thread Type Inlet Thread Type

NPT

	Maximum Inlet Pressure Maximum Inlet Pressure

	Body Material Body Material

	Relief Port Pipe Size Relief Port Pipe Size

	Seal Material Seal Material

	Test Mechanism Test Mechanism

Ring

Lever

T-Handle

	Inlet Gender Inlet Gender

Male

Female

	Set Pressure Configuration Set Pressure Configuration

Nonadjustable

	Shape Shape

	90° Elbow
	Straight
	Tee

	Maximum Temperature Maximum Temperature

	Relief Port Connection Type Relief Port Connection Type

Pipe

Vent

	Inlet Connection Style Inlet Connection Style

Threaded

Push to Connect

	Overall Height Overall Height

	Valve Type Valve Type

Pop Safety

Pressure Regulator

	Activation Activation

Pressure Driven

	Inlet Connection Type Inlet Connection Type


Pipe	Tube

	Relief Port Location Relief Port Location

Side

Top

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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119 Products

About Pressure-Relief Valves

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

Body is brass or nickel-plated brass. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

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

For corrosion resistance in wet conditions and harsh environments, these valves have a 303 stainless steel body. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

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

These valves have a bronze body for durability and a long service life. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

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

With a 316 stainless steel body for exceptional corrosion resistance, these valves are often used in wet conditions and harsh environments. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

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

Commonly used with high-volume blowers, compressors, and air-powered conveyors, these valves quickly relieve a large amount of air in systems with a pipe size of 2 or greater. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

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

These valves meet ASME Code Section VIII for use with water pressure vessels.

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

Protect your water-heating system with these valves that meet ASME Code Section IV for hot water heaters and boilers.

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

Also known as T & P valves, these open when water temperature reaches 210° F or at the set pressure.

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

These valves meet ASME Code Section I for use with steam power boilers requiring pressure relief above 15 psi.

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

For use with low-pressure steam-heating boilers requiring pressure relief at 15 psi, these valves meet ASME Code Section IV.

Pressure-Regulating Valves

Panel-Mount Ultra-High-Pressure-Regulating
Valves for Air and Inert Gas

Valves have a brass body.

Panel-Mount High-Pressure-Regulating
Valves for Air and Inert Gas

Withstand inlet pressures up to 3,500 psi.

Pressure-Regulating Valves with
Push-to-Connect Fittings for Food and Beverage

Push-to-connect fittings form a low-pressure seal around plastic or soft metal tubing.

Threaded Pressure-Regulating
Valves for Food and Beverage

Valves have NPT connections.

Pressure-Regulating Valves for Drinking Water

These valves meet NSF/ANSI 61 for use in drinking water systems.

About Pressure-Relief Valves

Fast-Acting Pressure-Relief Valves

ASME-Code Fast-Acting Pressure-ReliefValves for Air and Inert Gas

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

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

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

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

ASME-Code Fast-ActingPressure-Relief Valves for Water

ASME-Code Fast-ActingPressure-Relief Valves for Hot Water

Fast-Acting Temperature- andPressure-Relief Valves for Hot Water

ASME-Code Fast-ActingPressure-Relief Valves for Steam

ASME-Code Fast-Acting Pressure-ReliefValves for Low-Pressure Steam