Matching Flow Diagrams to Replace an Air Directional Control Valve
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Choosing an Air Directional Control Valve
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Two-Speed Two-Action Air-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 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. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion.
Valves with air pilot return actuation go back to their starting position when the air supply is moved from the first air pilot to the second air pilot.
NPTF (Dryseal) threads are compatible with NPT threads.
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.
O'all | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. Actuation Pressure, psi | No. of Flow Ports | No. of Air Pilot Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Air Pilot Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Threaded Female Inlet × Threaded Female Outlet × Threaded Female Pilot | ||||||||||||||||
Air Pilot Return Actuation | ||||||||||||||||
| 29 | 5 | 2 | 1/8 NPT | 1/8 NPT | Threaded | 1/8 NPT | 43.1 | 1.3 | 0-145 | 26 | 4 1/8" | 7/8" | 1 3/8" | No | 00000000 | 0000000 |
| 29 | 5 | 2 | 1/4 NPT | 1/4 NPT | Threaded | 1/8 NPT | 43.1 | 1.3 | 0-145 | 26 | 5" | 1" | 1 5/8" | No | 00000000 | 000000 |
| 29 | 5 | 2 | 3/8 NPTF | 3/8 NPTF | Threaded | 1/8 NPT | 53.1 | 1.6 | 0-150 | 10 | 6 5/8" | 1 1/4" | 2 1/4" | No | 0000000 | 000000 |
| 29 | 5 | 2 | 1/2 NPTF | 1/2 NPTF | Threaded | 1/8 NPT | 165.9 | 5 | 0-150 | 26 | 6 5/8" | 1 1/2" | 2 1/2" | No | 0000000 | 000000 |
| 29 | 5 | 2 | 10-32 UNF | 10-32 UNF | Threaded | 10-32 UNF | 8.6 | 0.26 | 0-150 | 26 | 2 3/8" | 5/8" | 1" | No | 0000000 | 000000 |
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. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Return actuation is by air, so they go back to their starting position when the air supply is moved from the first air pilot to the second air pilot. Also known as 4-way and 5/3 closed center 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 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. Actuation Pressure, psi | No. of Flow Ports | No. of Air Pilot Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Air Pilot Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Threaded Female Inlet × Threaded Female Outlet × Threaded Female Air Pilot | ||||||||||||||||
| 44 | 5 | 2 | 1/8 NPT | 1/8 NPT | Threaded | 1/8 NPT | 42 | 0.5 | 26-145 | 26 | 4 3/4" | 7/8" | 1 3/8" | No | 00000000 | 0000000 |
| 44 | 5 | 2 | 1/4 NPT | 1/4 NPT | Threaded | 1/8 NPT | 73 | 0.95 | 26-145 | 26 | 5 5/8" | 1" | 1 5/8" | No | 00000000 | 000000 |
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. They direct airflow from an 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.
Valves that are both normally closed and normally open can be installed to normally block airflow, or to normally allow flow and remain open until actuated.
Valves with air pilot return actuation go back to their starting position when the air supply is moved from the first air pilot to the second air pilot.
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.
O'all | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min. Actuation Pressure, psi | No. of Flow Ports | No. of Air Pilot Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Air Pilot Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Normally Open/Normally Closed Valve Starting Position | ||||||||||||||||
Air Pilot Return Actuation | ||||||||||||||||
| 29 | 3 | 2 | 1/8 NPT | 1/8 NPT | Threaded | 1/8 NPT | 24.9 | 0.75 | 0-145 | 26 | 3 1/2" | 7/8" | 1 3/8" | No | 00000000 | 0000000 |
| 29 | 3 | 2 | 1/4 NPT | 1/4 NPT | Threaded | 1/8 NPT | 24.9 | 0.75 | 0-145 | 26 | 4 1/8" | 1" | 1 5/8" | No | 00000000 | 000000 |
| 29 | 3 | 2 | 3/8 NPTF | 3/8 NPTF | Threaded | 1/8 NPT | 53.1 | 1.6 | 0-150 | 10 | 5 1/2" | 1 1/4" | 2 1/4" | No | 0000000 | 000000 |
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. Add or remove valves as your needs change.
3-way valves create one action, such as extending a cylinder. They have four flow positions, which allows the valve to operate as two independent valves from a single station on the manifold. 4-way valves create two actions, such as extending and retracting a double-acting cylinder.
Normally closed valves block airflow until actuated.
Valves with air pilot return actuation go back to their starting position when the air supply is moved from the first air pilot to the second air pilot.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve Starting Position | No. of Valves | Return Actuation | No. of Flow Ports | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Voltage | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
3/2 Flow Pattern | ||||||||||||||
| Normally Closed | 2 | Air Pilot | 3 | 148.41 | 1 | 22-102 | Not Rated | 24V DC | 4 5/8" | 3/4" | 2 7/8" | Yes | 0000000 | 000000 |
Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Valves | Return Actuation | No. of Flow Ports | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Voltage | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
5/2 Flow Pattern | |||||||||||||
| 1 | Air Pilot | 5 | 167 | 1 | 22-102 | Not Rated | 24V DC | 4 5/8" | 3/4" | 2 7/8" | Yes | 0000000 | 000000 |