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 Foot-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. Operate them with your foot, leaving your hands free to perform other tasks. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. The foot guard prevents accidental valve operation. Also known as 4-way and 5/2 valves.
Valves with spring return actuation go back to their original position as soon as you release the actuator.
Valves with a foot return actuation stay actuated and go back to their original position only when you step on them again.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | Exhaust Connection Type | Max. Flow Rate | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||
Spring Return Actuation | |||||||||||||
| 5 | 1/4 NPT | 1/4 NPT | Threaded | Not Rated | 0.78 | 0-116 | Not Rated | 9 5/8" | 5 3/8" | 5 1/4" | No | 0000000 | 000000 |
| 5 | 1/4 BSPP | 1/4 BSPP | Threaded | 30 scfm @ 100 psi | 1.36 | 0-145 | Not Rated | 236mm | 169mm | 157mm | No | 000000 | 000000 |
Foot Return Actuation | |||||||||||||
| 5 | 1/4 BSPP | 1/4 BSPP | Threaded | 30 scfm @ 100 psi | 1.36 | 0-145 | Not Rated | 236mm | 169mm | 157mm | No | 000000 | 000000 |
Two-Action Foot-Operated Air Directional Control Valves
Also known as 4-way and 4/2 valves, these valves create two actions, such as extending and then retracting a cylinder. Use your foot to operate them, leaving your hands free to perform other tasks. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Valves without an exhaust connection exhaust air to the atmosphere.
Valves with spring return actuation return to their original position as soon you release the actuator.
Valves with a foot return actuation stay actuated and return to their original position only when you step on them again.
Optional safety guards prevent accidental valve actuation.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Valves | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
O'all | Optional Safety Guards | Replacement Seal Kits | ||||||||||||||||
| 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. | Mounting Fasteners Included | Each | Each | Each | ||||
Threaded Female Inlet × Threaded Female Outlet | ||||||||||||||||||
Spring Return Actuation | ||||||||||||||||||
| A | 4 | 1/8 NPT | 1/8 NPT | __ | 30 | 0.53 | 60-150 | Not Rated | 4 1/2" | 3 1/2" | 1 3/4" | No | 0000000 | 0000000 | 000000 | 000000 | 000000 | 00 |
| B | 4 | 1/4 NPTF | 1/4 NPTF | Threaded | 83 | 2.4 | 0-225 | 29 | 11 1/2" | 3 1/2" | 2 3/4" | No | 0000000 | 000000 | 000000 | 00 | 00000000 | 000000 |
| B | 4 | 3/8 NPTF | 3/8 NPTF | Threaded | 118 | 3.2 | 0-225 | 29 | 12 1/2" | 3 1/2" | 2 3/4" | No | 0000000 | 000000 | 000000 | 00 | 00000000 | 00000 |
| B | 4 | 1/2 NPTF | 1/2 NPTF | Threaded | 185 | 5.2 | 0-215 | 29 | 14 1/2" | 3 1/2" | 3 3/8" | No | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
Foot Return Actuation | ||||||||||||||||||
| C | 4 | 1/4 NPTF | 1/4 NPTF | Threaded | 83 | 2.4 | 0-225 | 29 | 9 1/2" | 3 1/4" | 4 1/2" | No | 0000000 | 000000 | 000000 | 00 | 00000000 | 00000 |
| C | 4 | 1/2 NPTF | 1/2 NPTF | Threaded | 185 | 5.2 | 0-215 | 29 | 12 1/8" | 3 1/4" | 4 7/8" | No | 0000000 | 000000 | 000000 | 00 | 00000000 | 00000 |
Single-Action Foot-Operated Air Directional Control Valves
Also known as 3-way or 3/2 valves, these valves create one action, such as extending a cylinder. Use your foot to operate them, leaving your hands free to perform other tasks. Valves direct airflow from the inlet to your equipment and exhaust return airflow to create motion. They're normally closed to normally block airflow, and remain closed until actuated. Return actuation is by spring, so they go back to their original position as soon as you release the actuator. In the off position, they exhaust air pressure from the system to the atmosphere, allowing equipment to reset so the action can be repeated.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Valves | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Optional Guards for Foot Switches | ||||||||||||||
| No. of Valves | No. of Flow Ports | Inlet Size | Outlet Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | Each | ||
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||||
| 1 | 3 | 1/8 NPT | 1/8 NPT | 30 | 0.53 | 60-150 | Not Rated | 2 7/8" | 2 1/2" | 1 3/8" | No | 0000000 | 000000 | 000000 | 000000 |
| 1 | 3 | 1/8 NPT | 1/8 NPT | 30 | 0.53 | 60-150 | Not Rated | 4 1/2" | 3 1/2" | 1 3/4" | No | 0000000 | 000000 | 000000 | 00000 |
| 2 | 3 | 1/8 NPT | 1/8 NPT | 30 | 0.53 | 60-150 | Not Rated | 2 7/8" | 5 3/4" | 1 1/2" | No | 0000000 | 000000 | 0000000 | 00000 |
| 2 | 3 | 1/8 NPT | 1/8 NPT | 30 | 0.53 | 60-150 | Not Rated | 4 1/2" | 8 3/8" | 1 7/8" | No | 0000000 | 000000 | 0000000 | 00000 |
Foot-Operated Air On/Off Valves
Turn airflow on and off with your foot to keep your hands free to perform other tasks. Step on the valve to allow airflow; release the valve to stop the flow. The nonskid base prevents the valve from slipping.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Optional guards prevent accidental valve actuation. Those that are 6 1/4” high can accommodate safety footwear.
Flow Rate @ 100 psi | Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size  | Outlet Pipe Size | Flow Coefficient (Cv) | Min. | Max. | Max. Pressure, psi | Temp. Range, °F | Lg. | Wd. | Ht. | Features | Each | |
NPT Female Inlet × NPT Female Outlet | ||||||||||||
Cast Iron Body | ||||||||||||
| 1/8 | 1/8 | 0.48 | 0 scfm | 30 scfm | 150 | 0° to 130° | 4 9/16" | 3 7/16" | 1 3/4" | Nonskid Base | 0000000 | 0000000 |
Steel Body | ||||||||||||
| 1/8 | 1/8 | Not Rated | Not Rated | 30 scfm | 150 | 0° to 130° | 2 7/8" | 2 3/4" | 1 3/8" | Nonskid Base | 0000000 | 000000 |