Purge Kits | McMaster-Carr

	Inlet Pipe Size Inlet Pipe Size

	Inlet Thread Type Inlet Thread Type

	For Use With For Use With

	Outlet Pipe Size Outlet Pipe Size

	Body Material Body Material

	Actuation Actuation

	Maximum Pressure Maximum Pressure

	Valve Function Valve Function

	Voltage Voltage

	Valve Type Valve Type

	Shape Shape


Straight	90° Elbow

	Inlet Gender Inlet Gender

Female

Male

	For Outlet Tube OD For Outlet Tube OD

	Inlet Connection Type Inlet Connection Type


Pipe	Tube

	Maximum Temperature Maximum Temperature

	Outlet Connection Type Outlet Connection Type


Pipe	Tube

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

DFARS Specialty Metals
COTS-Exempt

	Outlet Thread Type Outlet Thread Type

	Overall Height Overall Height

	ISO Designation ISO Designation

	Meter Out
	Meter In

	Flow Pattern Flow Pattern

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

Forward

How can we improve?

426 Products

Air-Release Valves

Air-Release Valves for Water and Coolant

Body is brass.

Corrosion-Resistant Air-Release
Valves for Water and Coolant

These valves are made of corrosion-resistant materials for use in wet conditions and harsh environments.

Corrosion-Resistant Remote-Discharge
Air-Release Valves for Water

For excellent corrosion resistance in wet conditions and harsh environments, these valves have no metal parts.

Remote-Discharge Air-Release Valves for Water

These valves have a cast iron body.

Inline Air-Release Valves for Water

An internal wire brush traps air bubbles and discharges them through the top relief port while allowing inline flow from the inlet to the outlet.

Key-Operated Air-Release Valves for Water

Turn the key to manually vent radiators and heaters.

Air-Release Valves for Oil and Fuel

Use this valve with oil, diesel fuel, gasoline, and kerosene.

Air-Release Valves for Drinking Water

Eliminate air pockets in your drinking water system with these valves. They meet NSF/ANSI 61, which designates them as safe to use with drinking water.

Air-Release Valves for Steam

Our only air-release valves for steam, these seal shut when steam enters the valve to prevent system contents from escaping through the relief port.

Accessories for Infrared Thermometer Transmitters

Use these accessories to protect your infrared thermometer transmitter and keep it working properly in hot or dirty environments.

Timer-Operated Air On/Off Valves

Install these valves on your air tank outlet—at the end of the day, they automatically close to save energy.

Air-Exhaust Control Valves

Quickly dump exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. Also known as quick exhaust valves.

Elbow Air-Exhaust Control Valves

Quickly vent exhaust air to the atmosphere or divert it to another place in your system to speed up the movement of equipment. The 90° elbow shape allows you to install them in tight spaces. Also known as quick exhaust valves.

Elbow Air-Exhaust Control Valves with Flow Control

Control the flow of exhaust air while also regulating the exhaust air speed. These valves dump exhaust air to the atmosphere without routing it back through a directional control valve. The 90° elbow shape allows you to install them in tight spaces. Also known as quick exhaust valves.

Quiet Air-Exhaust Control Valves

A muffler reduces exhaust noise. Valves allow airflow into your equipment and then quickly dump exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. Also known as quick exhaust valves.

Made-to-Order Air-Operated Air-Exhaust Control Valves

Choose the pressure range you need. When these valves receive an air signal, they quickly dump exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. They're often used with air compressors that require continuous operation. Also known as quick exhaust valves.

Air-Exhaust Flow Control Valves

Install these valves in the exhaust ports of air directional control valves to control exhaust air speed without needing access to your cylinder.

Elbow Air Flow Control Valves

Mount these valves directly to cylinder ports, eliminating additional tubing between the cylinder and valve for better control than inline valves. They control the speed of air-powered equipment by adjusting the volume of airflow.

Stand-Alone Air Directional Control Valves

Two-Action Electrically Operated
Air Directional Control Valves

Also known as 4-way valves, these valves create two actions, such as extending and then retracting a double-acting cylinder. Apply voltage to the electrical connection to actuate.

Two-Speed Two-Action Electrically
Operated Air Directional Control Valves

Often used to extend and then retract a cylinder at different speeds, these valves create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Also known as 5/2 valves, they actuate when voltage is applied to the electrical connection.

Two-Speed Two-Action Air Directional Control Valves

Two-Speed Two-Action Air Directional
Control Valves with Exhausting Shut-Off

In the off position, these valves exhaust all air pressure, allowing the equipment to return to the neutral position. They create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Also known as 4-way and 5/3 exhaust center valves.

Two-Speed Two-Action Electrically Operated
Air Directional Control Valves with Full Shut-Off

These valves close all ports in the off position to stop equipment in a locked position with air pressure holding it in place. Often used to extend and then retract a cylinder at different speeds, they create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Apply voltage to the electrical connection to actuate.

Single-Action Electrically Operated
Air Directional Control Valves

These valves create one action, such as extending a cylinder. Apply voltage to the electrical connection to actuate. They're also known as 3/2 valves.

Compressed Air Filter, Regulator, and Lubricators (FRLs)

Safety Lockout Valves for Festo Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Safety Lockout Valves for Norgren Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Safety Lockout Valves for Parker Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Safety Lockout Valves for ASCO Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Safety Lockout Valves for SMC Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Slow-Start Air-Exhaust Valves for Wilkerson Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Also known as Monday-morning valves, these valves slowly introduce pressure to reduce surge damage during start-up.

Slow-Start Air-Exhaust Valves for SMC Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Also known as Monday-morning valves, these valves slowly introduce pressure to reduce surge damage during start-up.

Safety Lockout Valves for Wilkerson Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Safety Lockout Valves for ARO Modular
Compressed Air Filter/Regulator/Lubricators (FRLs)

Prevent accidental start-up when servicing equipment.

Fume Exhausters

Wall-Mount Fume Exhausters

Floor-Mount Fume Exhausters

Portable Fume Exhausters

In addition to using the handle to carry these exhausters, you can mount them to a wall, bench, or floor.

Floor-Mount Hazardous Location Fume Exhausters

Wall-Mount Hazardous Location Fume Exhausters

3D Printer Portable Air Cleaners

Draw particles and filament fumes away from open-frame 3D printers without cooling off printed parts.

Air Curtains

Produce a stream of air down a doorway or other opening to keep out dust, dirt, insects, and fumes while allowing personnel to pass through.

Fume Hoods

Pair these hoods with an exhaust system to contain harmful fumes, vapors, and gasses while venting them away from work spaces—they protect users from inhaling or coming in contact with them.

Air Cleaners

Combination Mobile/Bench-Top Air Cleaners

Roll this air cleaner to the contaminant source or place it on a bench top.

Static-Dissipative Bench-Top Air Cleaners

Eliminate static buildup while cleaning air.

Mobile Air Cleaners

Larger than portable air cleaners, these air cleaners roll to where you need them.

Bench-Top Air Cleaners

Office Air Cleaners

Purify the air in spaces with light cleaning needs.

Portable Air Cleaners

Carry these small cleaners to job sites to remove odors and dust from the air.

Static-Dissipative Adjustable-Arm
Bench-Top Air Cleaners

Eliminate static buildup while cleaning air.

Bench-Top Air Cleaner Hoods

Filtering away dust and particles, these hoods create a clean space for demanding work, such as bioprocessing, pharmaceuticals, electronics, and optics.

Ultraviolet Air Cleaners

Remove viruses, bacteria, dust, and other particles from the air.

Ceiling-Mount Office Air Cleaners

Save floor space—cleaners mount in a T-bar style ceiling.

Air-Release Valves

Air-Release Valves for Water and Coolant

Corrosion-Resistant Air-ReleaseValves for Water and Coolant

Corrosion-Resistant Remote-DischargeAir-Release Valves for Water

Remote-Discharge Air-Release Valves for Water

Inline Air-Release Valves for Water

Key-Operated Air-Release Valves for Water

Air-Release Valves for Oil and Fuel

Air-Release Valves for Drinking Water

Air-Release Valves for Steam

Accessories for Infrared Thermometer Transmitters