Choosing an Air Directional Control Valve
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About Gradual On/Off Valves
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Matching Flow Diagrams to Replace an Air Directional Control Valve
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Threaded Gradual On/Off Valves
Also known as gate valves, these valves gradually open and close to prevent system damage from suddenly starting and stopping flow.
Valves with a wheel handle open and close with multiple turns, providing more controlled, shock-resistant flow than valves with a pull handle.
Valves with a nonrising stem keep the stem in the same position whether they’re open or closed. They’re often used underground and in low-clearance locations.
316 stainless steel valves resist corrosion better than bronze, brass, and cast iron valves.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- Valve Type: Gate
- For Use With: See Table
- Specifications Met: See Table
O'all | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Stem Housing Connection Style | End-to-End Lg. | Ht. | Lg. | For Use With | Specifications Met | Each | |
NPT Female | ||||||||||||
| 1/2 | 17.6 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 1/8" | 4 1/2" | 2 3/4" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 000000 |
| 3/4 | 32 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 5/16" | 4 7/8" | 2 3/4" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 00000 |
| 1 | 54 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 11/16" | 5 3/8" | 3 1/8" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 000000 |
| 1 1/4 | 97 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 15/16" | 6 5/16" | 3 1/8" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 000000 |
| 1 1/2 | 135 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 3 1/8" | 7 1/2" | 3 15/16" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 000000 |
| 2 | 230 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 3 11/16" | 8 3/8" | 3 15/16" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 0000000 | 000000 |
| 3 | 802 | 200 psi @ 72° F | __ | -35° to 375° | Threaded | 5 1/8" | 11 3/16" | 5 1/8" | Water, Oil, Air, Helium, Krypton, Neon, Xenon, Carbon Dioxide, Nitrogen | __ | 00000000 | 000000 |
Two-Action 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 double-acting cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion.
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.
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 | Lg. | Wd. | Ht. | Dia. | Mounting Fasteners Included | Each | ||
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||||
Hand Return Actuation | |||||||||||||||
| B | 4 | 1/4 NPT | 1/4 NPT | Threaded | 14.13 | 0.4 | 0-140 | Not Rated | 5 1/4" | 2 1/2" | 3 1/2" | 1 3/8" | No | 0000000 | 000000 |
| B | 4 | 3/8 NPT | 3/8 NPT | Threaded | 38.85 | 1.1 | 0-140 | Not Rated | 5 7/8" | 2 7/8" | 4 1/8" | 1 5/8" | No | 0000000 | 000000 |
| B | 4 | 1/2 NPT | 1/2 NPT | Threaded | 109.48 | 3.1 | 0-140 | Not Rated | 6 3/8" | 4" | 4 7/8" | 2" | No | 0000000 | 000000 |
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-way and 4/3 closed-center valves, they create two actions, such as extracting and then retracting a double-acting cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Return actuation is by hand, so valves 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.
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 | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||
| 4 | 1/4 NPT | 1/4 NPT | Threaded | 125 | 3.4 | 0-145 | Not Rated | 5 5/8" | 4" | 4 3/4" | No | 00000000 | 000000 |
| 4 | 3/8 NPT | 3/8 NPT | Threaded | 70 | 3 | 0-150 | Not Rated | 6 7/8" | 4 3/4" | 3 3/4" | No | 00000000 | 000000 |
| 4 | 3/8 NPT | 3/8 NPT | Threaded | 70 | 3 | 0-250 | Not Rated | 6 7/8" | 4 3/4" | 3 3/4" | No | 000000000 | 000000 |
| 4 | 1/2 NPT | 1/2 NPT | Threaded | 145 | 6.2 | 0-150 | Not Rated | 9" | 5 5/8" | 4 1/2" | No | 00000000 | 000000 |
| 4 | 1/2 NPT | 1/2 NPT | Threaded | 145 | 6.2 | 0-250 | Not Rated | 9" | 5 5/8" | 4 1/2" | No | 000000000 | 000000 |
Two-Action Air Directional Control Valves with Exhausting Shut-Off
In the off position, these valves exhaust all air pressure, allowing equipment to return to the neutral position. Also known as 4-way and 4/3 exhaust-center valves, they create two actions, such as extracting and then retracting a double-acting cylinder. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion. Return actuation is by hand, so valves 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.
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 | Lg. | Wd. | Ht. | Mounting Fasteners Included | Each | |
Threaded Female Inlet × Threaded Female Outlet | |||||||||||||
| 4 | 1/4 NPT | 1/4 NPT | Threaded | 125 | 3.4 | 0-145 | Not Rated | 5 5/8" | 4" | 4 3/4" | No | 00000000 | 000000 |
| 4 | 3/8 NPT | 3/8 NPT | Threaded | 70 | 3 | 0-150 | Not Rated | 6 7/8" | 4 3/4" | 3 3/4" | No | 00000000 | 000000 |
| 4 | 1/2 NPT | 1/2 NPT | Threaded | 145 | 6.2 | 0-150 | Not Rated | 9" | 5 5/8" | 4 1/2" | No | 00000000 | 000000 |