Matching Flow Diagrams to Replace an Air Directional Control Valve
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Choosing an Air Directional Control Valve
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Single-Action Air Directional Control Valves
Manually control these valves by pushing or turning the actuator. Also known as 3-way or 3/2 valves, they create one action, such as extending a cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. In the off position, they exhaust air pressure from the system, allowing equipment to reset so the action can be repeated.
Normally closed valves block airflow until actuated. Valves that are both normally closed and normally open can be installed to block airflow, or allow air to flow until actuated.
Valves with hand return actuation stay actuated and go back to their starting position only when you move the actuator again. Valves with spring return actuation go back to their starting position as soon as you release the actuator.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
For technical drawings and 3-D models, click on a part number.
Overall | For Panel Cutout | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Actuator Color | Lg. | Wd. | Ht. | Dia. | Wd. | Lg. | Mounting Fasteners Included | Each | ||
Normally Closed Flow Positions | ||||||||||||||||||
Hand Return Actuation | ||||||||||||||||||
| Q | 3 | 1/8 NPT | 1/8 NPT | Threaded | 10.7 | 0.34 | 0-145 | 26.5 | Red | 4 1/2" | 7/8" | 1 3/8" | 1 1/4" | __ | __ | No | 00000000 | 0000000 |
Spring Return Actuation | ||||||||||||||||||
| N | 3 | 1/8 NPT | 1/8 NPT | Threaded | 6 | 0.11 | 0-120 | 23 | Red | 2 3/8" | 2 3/8" | 3 5/16" | 1 1/4" | 3/4" | 1 3/4" | Yes | 0000000 | 000000 |
| W | 3 | 1/8 NPT | 1/8 NPT | Threaded | 6 | 0.11 | 0-120 | 23 | Black | 1 7/8" | 1 5/8" | 2 1/2" | 1 1/4" | 3/4" | 1 3/4" | Yes | 0000000 | 000000 |
Normally Open/Normally Closed Flow Positions | ||||||||||||||||||
Hand Return Actuation | ||||||||||||||||||
| X | 3 | 1/8 NPT | 1/8 NPT | Threaded | 6 | 0.11 | 0-120 | 23 | Black | 1 7/8" | 1 5/8" | 3" | 1 1/4" | 3/4" | 1 3/4" | Yes | 0000000 | 000000 |
Two-Speed Two-Action 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. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Also known as 4-way and 5/2 valves.
Valves with threaded exhaust connection type allow you to control the speed of each action by attaching a flow control valve to each exhaust port.
Valves with spring return actuation return to their original position as soon as you release the actuator.
Valves with hand return actuation stay actuated and return to their original position only when you move the actuator again.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
For technical drawings and 3-D models, click on a part number.
O'all | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | For Panel Cutout Dia. | Mounting Fasteners Included | Each | ||
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||||
Spring Return Actuation | |||||||||||||||
| Q | 5 | 1/8 NPT | 1/8 NPT | Threaded | 14 | 0.24 | 25-125 | Not Rated | 1 5/8" | 1 5/8" | 3/4" | 1 1/4" | No | 00000000 | 0000000 |
Hand Return Actuation | |||||||||||||||
| M | 5 | 1/8 NPT | 1/8 NPT | Threaded | 19 | 0.34 | 15-150 | Not Rated | 1 1/2" | 1 1/2" | 4 1/2" | 1 1/4" | __ | 00000000 | 000000 |
| T | 5 | 1/8 NPT | 1/8 NPT | Threaded | 14 | 0.24 | 25-125 | Not Rated | 1 5/8" | 1 5/8" | 4 3/8" | 1 1/4" | No | 00000000 | 000000 |
Key-Operated Two-Speed Two-Action Air Directional Control Valves
Because they require a key to operate, you can limit who is able to adjust these 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. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Return actuation is by hand, so they stay actuated and return to their original position only when you move the actuator again. Also known as 4-way and 5/2 valves.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
For technical drawings and 3-D models, click on a part number.
Overall | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | For Panel Cutout Dia. | Mounting Fasteners Included | No. of Keys Included | Each | |
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||||
| 5 | 1/8 NPT | 1/8 NPT | Threaded | 11.3 | 0.34 | 14-145 | 26.5 | 7/8" | 1 5/8" | 5 5/8" | 1 1/4" | No | 2 | 0000000 | 0000000 |