Matching Flow Diagrams to Replace an Air Directional Control Valve
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Choosing an Air Directional Control Valve
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About On/Off Valves
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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. Valves without an exhaust connection exhaust air to the atmosphere.
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 | ||||||||||||||||||
| D | 3 | 10-32 UNF | 10-32 UNF | Threaded | 16.2 | 0.25 | 0-125 | 26 | __ | 5/8" | 5/8" | 2 1/8" | 1/2" | __ | __ | Yes | 0000000 | 000000 |
| E | 3 | 1/8 NPT | 1/8 NPT | Threaded | 25 | 0.442 | 0-300 | Not Rated | __ | 7/8" | 5/8" | 3" | 1/2" | __ | __ | Yes | 00000000 | 00000 |
| H | 3 | 10-32 UNF | 10-32 UNF | __ | 14.4 | 0.24 | 0-125 | Not Rated | Black | 5/8" | 5/8" | 2 1/4" | 1/2" | __ | __ | Yes | 00000000 | 00000 |
| J | 3 | 1/8 NPT | 1/8 NPT | __ | 17.8 | 0.29 | 0-125 | Not Rated | Black | 1 1/4" | 5/8" | 2 1/2" | 1/2" | __ | __ | Yes | 00000000 | 00000 |
Spring Return Actuation | ||||||||||||||||||
| D | 3 | 10-32 UNF | 10-32 UNF | Threaded | 16.2 | 0.25 | 0-125 | 26 | __ | 5/8" | 5/8" | 2 1/8" | 1/2" | __ | __ | Yes | 0000000 | 00000 |
| J | 3 | 1/8 NPT | 1/8 NPT | __ | 17.8 | 0.29 | 0-125 | Not Rated | Black | 1 1/4" | 5/8" | 2 1/2" | 1/2" | __ | __ | Yes | 00000000 | 00000 |
Normally Open/Normally Closed Flow Positions | ||||||||||||||||||
Hand Return Actuation | ||||||||||||||||||
| L | 3 | 1/8 NPT | 1/8 NPT | Threaded | 6 | 0.11 | 0-120 | 23 | __ | 1 3/4" | 3/4" | 2 1/2" | 1/2" | 3/4" | 1 3/4" | Yes | 0000000 | 00000 |
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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. | For Panel Cutout Dia. | Mounting Fasteners Included | Each | ||
Normally Closed Flow Positions | ||||||||||||||
Hand Return Actuation | ||||||||||||||
| H | 3 | 1/8 NPT | 10-32 UNF | 14.4 | 0.24 | 0-125 | Not Rated | 5/8" | 5/8" | 2 1/4" | 1/2" | Yes | 00000000 | 000000 |
| J | 3 | 1/8 NPT | 1/8 NPT | 17.8 | 0.29 | 0-125 | Not Rated | 1 1/4" | 5/8" | 2 3/8" | 1/2" | Yes | 00000000 | 00000 |
Spring Return Actuation | ||||||||||||||
| H | 3 | 1/8 NPT | 10-32 UNF | 14.4 | 0.24 | 0-125 | Not Rated | 5/8" | 5/8" | 2 1/4" | 1/2" | Yes | 00000000 | 00000 |
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | For Inlet Tube OD | Outlet Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Lg. | Wd. | Ht. | For Panel Cutout Dia. | Mounting Fasteners Included | Each | ||
Normally Open/Normally Closed Flow Positions | ||||||||||||||
Hand Return Actuation | ||||||||||||||
| K | 3 | 5/32" | 1/8 NPT | 2.63 | 0.006 | 0-145 | Not Rated | 1 1/8" | 5/8" | 2 1/8" | 1/2" | No | 00000000 | 000000 |
| K | 3 | 1/4" | 1/4 NPT | 9.12 | 0.115 | 0-145 | Not Rated | 1 1/4" | 3/4" | 2 1/2" | 1/2" | No | 00000000 | 00000 |
| K | 3 | 1/4" | 1/8 NPT | 6.72 | 0.048 | 0-145 | Not Rated | 1 1/8" | 5/8" | 2 1/8" | 1/2" | No | 00000000 | 00000 |
| K | 3 | 3/8" | 1/4 NPT | 10.9 | 0.139 | 0-145 | Not Rated | 1 1/2" | 3/4" | 2 1/2" | 1/2" | No | 00000000 | 00000 |
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | For Inlet Tube OD | For Outlet Tube OD | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating | Lg. | Wd. | Ht. | For Panel Cutout Dia. | Mounting Fasteners Included | Max. Flow Rate, scfm @ 100 psi | Each | ||
Normally Closed Flow Positions | ||||||||||||||
Hand Return Actuation | ||||||||||||||
| J | 3 | 1/4" | 1/4" | 0.29 | 0-125 | Not Rated | 1 1/4" | 5/8" | 2 5/8" | 1/2" | Yes | 17.8 | 00000000 | 000000 |
Spring Return Actuation | ||||||||||||||
| J | 3 | 1/4" | 1/4" | 0.29 | 0-125 | Not Rated | 1 1/4" | 5/8" | 2 5/8" | 1/2" | Yes | 17.8 | 00000000 | 00000 |
Overall | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | For Inlet Tube ID | For Outlet Tube ID | 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 | ||
Normally Closed Flow Positions | |||||||||||||||
Hand Return Actuation | |||||||||||||||
| F | 3 | 1/16" | 1/16" | __ | 1.4 | 0.025 | 0-100 | Not Rated | 3/8" | 3/8" | 1 1/2" | 1/4" | Yes | 00000000 | 000000 |
| G | 3 | 1/16" | 1/16" | Barbed | 2.2 | 0.04 | 0-125 | 20 | 5/8" | 3/8" | 1 5/8" | 3/8" | Yes | 00000000 | 00000 |
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 no exhaust connection type exhaust air to the atmosphere.
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 | |||||||||||||||
| H | 5 | 10-32 UNF | 10-32 UNF | Threaded | 15.3 | 0.23 | 0-125 | Not Rated | 3/4" | 11/16" | 2 7/8" | 1/2" | Yes | 00000000 | 000000 |
Hand Return Actuation | |||||||||||||||
| F | 5 | 1/8 NPT | 1/8 NPT | __ | 10.5 | 0.186 | 0-150 | 28 | 1 1/4" | 5/8" | 2 3/4" | 1/2" | Yes | 00000000 | 00000 |
| F | 5 | 10-32 UNF | 10-32 UNF | __ | 10 | 0.177 | 0-150 | 28 | 7/8" | 5/8" | 2 3/4" | 1/2" | Yes | 00000000 | 00000 |
| G | 5 | 1/8 NPT | 1/8 NPT | Threaded | 14 | 0.24 | 25-125 | Not Rated | 1 1/4" | 3/4" | 3 3/4" | 1/2" | No | 00000000 | 000000 |
| H | 5 | 10-32 UNF | 10-32 UNF | Threaded | 15.3 | 0.23 | 0-125 | Not Rated | 3/4" | 11/16" | 2 7/8" | 1/2" | Yes | 00000000 | 00000 |
| J | 5 | 1/8 NPT | 1/8 NPT | Threaded | 16 | 0.37 | 0-125 | Not Rated | 1 1/4" | 5/8" | 2 7/8" | 1/2" | Yes | 00000000 | 00000 |
Two-Speed Two-Action Air Directional Control Valves with Exhausting Shut-Off
In the off position, these valves exhaust all air pressure, allowing the equipment to return to the neutral position. 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. Valves without an exhaust connection exhaust air to the atmosphere. Also known as 4-way and 5/3 exhaust center valves.
Valves with hand return actuation stay actuated and go back 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.
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Flow Ports | Inlet Size | Outlet Size | 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 | ||||||||||||||
Hand Return Actuation | ||||||||||||||
| A | 5 | 1/8 NPT | 1/8 NPT | 7.5 | 0.133 | 0-150 | Not Rated | 7/8" | 5/8" | 2 1/2" | 5/8" | Yes | 00000000 | 000000 |
| A | 5 | 10-32 UNF | 10-32 UNF | 7.5 | 0.133 | 0-150 | Not Rated | 7/8" | 5/8" | 2 1/2" | 5/8" | Yes | 00000000 | 00000 |
Fast-Acting Panel-Mount Threaded On/Off Valves
Open and close these valves with the flip of the toggle switch. Commonly used for equipment testing and gas sampling, they have threads and a hex nut below the handle for installation in instrument panels.
316 stainless steel valves are more corrosion resistant than brass valves.
Manual-return valves remain open or closed when the toggle is moved into position.
Spring-return valves automatically close when the toggle is released.
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.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Stem
- For Use With: Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon
| Pipe Size  | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Toggle Switch Type | End-to-End Lg. | Panel Cutout Dia. | Each | |
Brass Body—Fluoroelastomer Rubber Seal | ||||||||
|---|---|---|---|---|---|---|---|---|
NPTF Female × NPTF Female | ||||||||
| 1/8 | 0.3 | 200 psi @ 70° F | -15° to 250° | Manual Return | 1 7/16" | 9/16" | 0000000 | 000000 |
| 1/4 | 1.2 | 125 psi @ 70° F | -15° to 250° | Manual Return | 1 7/8" | 9/16" | 0000000 | 00000 |
Brass Body—PTFE Plastic Seal | ||||||||
NPT Male × NPT Male | ||||||||
| 1/8 | 0.1 | 300 psi @ 200° F | -20° to 200° | Manual Return | 1 15/16" | 17/32" | 0000000 | 00000 |
| 1/4 | 0.2 | 300 psi @ 200° F | -20° to 200° | Manual Return | 2 1/4" | 17/32" | 0000000 | 00000 |
316 Stainless Steel Body—PTFE Plastic Seal | ||||||||
NPT Male × NPT Male | ||||||||
| 1/8 | 0.1 | 300 psi @ 200° F | -20° to 200° | Manual Return | 1 15/16" | 17/32" | 0000000 | 00000 |
| 1/4 | 0.2 | 300 psi @ 200° F | -20° to 200° | Manual Return | 2 1/4" | 17/32" | 0000000 | 00000 |
- Valve Type: Stem
- For Use With:
Buna-N Rubber Seal: Water, Oil, Air
All Other Valves: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
| Pipe Size | Thread Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Toggle Switch Type | Port-to-Port Lg. | Panel Cutout Dia. | Each | |
Brass Body—Buna-N Rubber Seal | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPT Male × UNF Female | |||||||||
| 1/8 | 10-32 | 7.3 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 000000 |
| 1/8 | 10-32 | 8 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 00000 |
| 1/8 | 10-32 | 8 | 150 psi @ 70° F | 35° to 230° | Spring Return | 5/16" | 15/32" | 0000000 | 00000 |
UNF Female × UNF Female | |||||||||
| __ | 10-32 | 6.8 | 150 psi @ 70° F | 35° to 230° | Spring Return | 5/16" | 15/32" | 0000000 | 00000 |
| __ | 10-32 | 7.3 | 150 psi @ 70° F | 35° to 230° | Manual Return | 5/16" | 15/32" | 0000000 | 00000 |
Brass Body—Fluoroelastomer Rubber Seal | |||||||||
NPTF Female × NPTF Female | |||||||||
| 1/8 | __ | 0.3 | 200 psi @ 70° F | -15° to 250° | Manual Return | 3/4" | 9/16" | 0000000 | 00000 |
| 1/4 | __ | 1.2 | 125 psi @ 70° F | -15° to 250° | Manual Return | 3/4" | 9/16" | 0000000 | 00000 |
Brass Body—PTFE Plastic Seal | |||||||||
NPT Male × NPT Male | |||||||||
| 1/4 | __ | 0.2 | 300 psi @ 200° F | -20° to 200° | Manual Return | 1" | 17/32" | 0000000 | 00000 |
316 Stainless Steel Body—PTFE Plastic Seal | |||||||||
NPT Male × NPT Male | |||||||||
| 1/4 | __ | 0.2 | 300 psi @ 200° F | -20° to 200° | Manual Return | 1" | 17/32" | 0000000 | 00000 |
Fast-Acting Panel-Mount On/Off Valves with Yor-Lok Fittings
- Valve Type: Stem
- For Use With: Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon
- Seal Material: PTFE Plastic
Flip the toggle to quickly turn these valves on and off. All have threads and a hex nut below the handle for installation in instrument panels. For extra gripping power and a strong seal, they have Yor-Lok fittings with two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.
316 stainless steel valves are more corrosion resistant than brass 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.
For technical drawings and 3-D models, click on a part number.
Straight | 90° Elbow | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Panel Cutout Dia. | End-to-End Lg. | Each | Port-to-Port Lg. | Each | ||
Brass Body | ||||||||||
Yor Lok × Yor Lok | ||||||||||
| 1/8" | 0.1 | 300 psi @ 200° F | -20° to 200° | 17/32" | 1 15/16" | 0000000 | 000000 | __ | 000000 | 00 |
| 1/4" | 0.2 | 300 psi @ 200° F | -20° to 200° | 17/32" | 2 1/4" | 0000000 | 00000 | 1 1/8" | 0000000 | 000000 |
316 Stainless Steel Body | ||||||||||
Yor Lok × Yor Lok | ||||||||||
| 1/8" | 0.1 | 300 psi @ 200° F | -20° to 200° | 17/32" | 1 15/16" | 0000000 | 000000 | __ | 000000 | 00 |
| 1/4" | 0.2 | 300 psi @ 200° F | -20° to 200° | 17/32" | 2 1/4" | 0000000 | 00000 | 1 1/8" | 0000000 | 00000 |