Air-Actuated Valves | McMaster-Carr

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240 Products

Air-Driven On/Off Valves

High-Flow Air-Driven On/Off Valves

For use in general purpose applications with water, oil, and inert gas.

Easy-Maintenance High-Flow
Air-Driven On/Off Valves

The three-piece bolted body comes apart for access to internal components without unthreading pipe connections and removing the valve from your line.

Heavy-Use High-Flow Air-Driven On/Off Valves

Limit wear and damage in high-cycling applications—these valves have additional seals that prevent leakage to reduce maintenance time.

Versa-Mount Air-Driven On/Off Valves

A compact, lightweight actuator and an angular body allow you to install these valves in any mounting orientation.

Compact Versa-Mount Air-Driven On/Off Valves

About half the height of our other versa-mount valves, these fit in tight spots.

Severe-Duty Air-Driven On/Off Valves

Also known as diaphragm valves, these have a diaphragm that can handle dirty liquid, slurries, and abrasive media without damage.

Compact Severe-Duty Air-Driven On/Off Valves

Less than half the height of standard severe-duty valves, these fit in small spaces and low-clearance pipelines.

Flanged Air-Driven On/Off Valves

Also known as butterfly valves.

High-Flow Flanged Air-Driven On/Off Valves

Their ball-valve design allows these valves to handle three times the flow of butterfly valves.

Sanitary Air-Driven On/Off Valves

Use air pressure to automatically control the flow of liquids in sanitary environments, such as food and beverage processing plants.

Severe-Duty Air-Driven On/Off Valves for Chemicals

Also known as diaphragm valves, these have a diaphragm that can handle dirty liquid, slurries, and abrasive media without damage.

Flanged Air-Driven On/Off Valves for Chemicals

With a ball-valve design, these valves can handle three times the flow of butterfly valves.

Air-Driven Diverting Valves

Threaded Air-Driven Diverting Valves

For use with threaded pipe, these valves have NPT connections. Use them with water, oil, air, and inert gas. All operate on compressed air to automatically divert flow between ports more quickly than motor-driven valves. You must control the air to the actuator using either an electric pilot valve or a manual on/off valve.

Flanged Air-Driven Diverting Valves

Bolt these valves to flanges. Use them with water, oil, air, and inert gas. All operate on compressed air to automatically divert flow between ports more quickly than motor-driven valves. You must control the air to the actuator using either an electric pilot valve or a manual on/off valve.

Compressed Air Control Valves

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

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. Also known as pilot valves and 4-way valves, they use an air signal to actuate, so they're good for environments where electrical use may be dangerous.

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.

Single-Action Air-Operated
Air Directional Control Valves

These valves create one action, such as extending a cylinder. Also known as 3/2 or pilot valves, they use an air signal to actuate, 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.

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-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.

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.

Rapid Air-Pulse Flow Control Valves

Convert a continuous stream of air into a series of quick pulses, reducing air consumption by up to 50% and improving performance in air-blowing applications such as cleaning and drying.