Safety Shut-Off Valves | McMaster-Carr

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214 Products

Air On/Off Valves

Safety-Lockout Air On/Off Valves

A padlock locks the handle of these valves in the shut-off position so you can disconnect air tools safely.

Quiet Safety-Lockout Air On/Off Valves

These valves have a muffler to reduce exhaust noise. A padlock locks the handle in the shut-off position so you can disconnect air tools safely.

Sliding-Sleeve Air On/Off Valves

Slide the knurled sleeve in one direction to stop flow, and slide it back to start flow again.

Air On/Off Valves

Control flow in two directions from a single source—these valves have two balls for independent control and shut-off of each outlet.

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-Operated Air On/Off Valves

Also known as blocking valves, these valves allow airflow while an air signal is applied to the air pilot. When the signal stops, the valve closes, trapping air in the system.

Foot-Operated Air On/Off Valves

Turn airflow on and off with your foot to keep your hands free to perform other tasks.

Electrically Operated Air On/Off Valves

Also known as solenoid valves, these valves are operated by an electrical signal to turn airflow on or off.

Robot-Arm-Mounted Electrically
Operated Air On/Off Valves

With two 2-way integrated solenoid valves, these electrically controlled valves direct airflow to venturi pumps, which generate the suction you need to run end-of-arm tools, such as vacuum cups.

High Airflow Shut-Off On/Off Valves

Also known as air fuses, these valves close automatically to turn airflow off when air volume exceeds the shut-off flow rate.

Air Signal On/Off Valves

When system pressure reaches the maximum, these valves open and send an air signal to turn on a downstream device such as a discharge valve or throttle. They close and send a signal to turn the device off when pressure drops.

Air-Operated Air Flow Control Valves with Safety Shut-Off

Air-Operated Air Flow Control
Valves with Safety Shut-Off

Protect air-powered equipment in emergency shut-off situations—when system pressure drops, these valves automatically close to stop cylinder motion, even at mid-stroke. They control the speed of air-powered equipment by adjusting the volume of airflow entering or exiting.

Air Directional Control Valves

Electrically Operated Air Directional
Control Valves with Flow Control

Use a single valve to create motion and control the speed of that motion.

Hazardous Location Electrically
Operated Air Directional Control Valves

These valves are rated for environments where hazardous material is present. They actuate when voltage is applied to the electrical connection.

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

Also known as 3/3 valves, these valves close all ports in the off position to stop equipment in a locked position with air pressure holding it in place. They're often used for vacuum suction and release applications and intermediate cylinder stops.

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.

Wear-Resistant Electrically Operated
Air Directional Control Valves

Ceramic plates form a longer-lasting seal against oil and dust than rubber seals that deteriorate over time. These valves withstand use in corrosive, dusty, and dirty environments such as foundries, paper mills, and steel plants. Apply voltage to the electrical connection to actuate.

Washdown-Resistant Electrically
Operated Air Directional Control Valves

Rated IP69K, these valves withstand high-pressure, high-temperature washdowns. Their smooth design keeps out dust, dirt, and contaminants, making them easier to keep clean. Apply voltage to the electrical connection to actuate.

Two-Action 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. Also known as 4/3 closed-center valves, they create two actions, such as extracting and then retracting a double-acting cylinder.

Two-Speed Two-Action 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. 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 closed center 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 Air-Operated Air
Directional Control Valves with Full Shut-Off

In the off position, these valves 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. They actuate by air signal, so they're good for environments where electrical use may be dangerous.

Modular Air Directional Control Valves
with Air and Electrical Manifolds

Mix and match valve styles on one manifold to meet your control needs. Mount multiple valves to a manifold to reduce piping requirements and create multiple actions from a single pressure input.

Modular Air Directional Control
Valves with Air Manifolds

Mount valves to a single-station base or to a manifold, which allows a single pressure source for multiple valves, then add or remove valves as your needs change.