Metal Air Tank Valves | McMaster-Carr

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	Body Material Body Material

	Seal Material Seal Material

	For Use With For Use With

	Inlet Pipe Size Inlet Pipe Size

	Valve Function Valve Function

Pressure Relief

Fill

Backflow Prevention

	Inlet Thread Type Inlet Thread Type

NPT

NPTF

UNF

	Maximum Inlet Pressure Maximum Inlet Pressure

	Shape Shape

	Straight
	90° Elbow
	70° Elbow

	Set Pressure Configuration Set Pressure Configuration

Nonadjustable

Adjustable

	Relief Port Connection Type Relief Port Connection Type

Pipe

Vent

	Valve Type Valve Type

	Inlet Gender Inlet Gender

Male

Female

	Inlet Connection Type Inlet Connection Type


Pipe	Tube

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Test Mechanism Test Mechanism

Ring

Lever

T-Handle

	System of Measurement System of Measurement

Inch

Metric

	Overall Height Overall Height

	Relief Port Pipe Size Relief Port Pipe Size

	Inlet Connection Style Inlet Connection Style

Threaded

	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

	Material Material

148 Products

About Pressure-Relief Valves

Fast-Acting Pressure-Relief
Valves for Air with Gauge Port

Attach a pressure gauge to the 1/4 NPT female port on these 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.

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

The most basic option for air and inert gas applications.

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 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.

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.

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

Change set pressure to suit your application—this valve includes four interchangeable color-coded springs with different set pressure ranges.

Pressure-Relief Valves

Compact Pressure-Relief Valves

Less than a quarter of the height of standard pressure-relief valves, these are often installed on tanks in low-clearance areas.

Made-to-Order Pressure-Relief Valves

Design a valve specifically for your process media and set pressure. Choose from a valve for air, inert gas, water, hydraulic oil, fuel oil, gasoline, or diesel fuel and a set pressure from 150 to 3,300 psi.

Fill Valves and Fittings

Air Fill Valves

Also known as Schrader valves, these valves rapidly fill or empty compressed air tanks or pneumatic tires.

High-Pressure Fill Valves for Air and Hydraulic Fluid

Add air and hydraulic fluid to high-pressure struts, tanks, and hydraulic accumulators—these fill valves withstand pressures up to 5,000 psi.

Couplers for High-Pressure Fill Valves

Air Chucks

Attach these chucks to your air hose so you can connect the hose to Schrader valves.

Air Flow Check Valves

Air Compressor Air Flow Check Valves

Prevent air from escaping an air storage tank when the air compressor is not running. These valves open to allow flow into the tank and close when flow stops or reverses direction.

Pressure-Relieving Air
Compressor Air Flow Check Valves

Release pressure in the line between a compressor and an air storage tank, making start-up easier on the motor. These valves open to allow flow into the tank and close when flow stops or reverses direction, preventing air from escaping the tank when the air compressor is not running.

Air Flow Check Valves

These valves open to allow flow in one direction and close when flow stops or reverses direction.

About Pressure-Relief Valves

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

Fast-Acting Pressure-ReliefValves for Air with Gauge Port

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

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

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

Adjustable Fast-Acting Pressure-ReliefValves for Air and Inert Gas

Pressure-Relief Valves

Compact Pressure-Relief Valves

Made-to-Order Pressure-Relief Valves

Fill Valves and Fittings

Air Fill Valves

High-Pressure Fill Valves for Air and Hydraulic Fluid

Couplers for High-Pressure Fill Valves

Air Chucks

Air Flow Check Valves

Air Compressor Air Flow Check Valves

Pressure-Relieving AirCompressor Air Flow Check Valves

Air Flow Check Valves

Fast-Acting Pressure-Relief
Valves for Air with Gauge Port

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

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

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

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

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

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

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

Pressure-Relieving Air
Compressor Air Flow Check Valves