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 Gradual On/Off Valves
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Threaded Gradual On/Off Valves
Also known as gate valves, these gradually open and close to prevent system damage from suddenly starting and stopping flow.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Gate
- For Use With: Water, Oil
O'all | |||||||
|---|---|---|---|---|---|---|---|
| Pipe Size  | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
NPT Female | |||||||
| 1 1/4 | 200 psi @ 70° F | -20° to 150° | 2 15/16" | 4 1/4" | 3" | 0000000 | 0000000 |
Threaded Gradual On/Off Valves for Boiler Blow-Off
Prevent boiler scale deposits and sediment buildup with these valves that meet ASME standards for boiler drainage applications. They gradually open and close to prevent system damage from suddenly starting or stopping flow.
Lever handles open and close faster than wheel handles.
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: Gate
- For Use With: Water
- Packing Material: EPDM Rubber
- Specifications Met: ASME B16.34, ASME B16.5, ASME B31.1, ASME BPVC.I
O'all | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
NPT Female | ||||||||
| 1 | 40 | 250 psi @ 350° F | 35° to 350° | 3 5/8" | 14 1/4" | 4 7/16" | 0000000 | 0000000 |
| 1 1/4 | 60 | 250 psi @ 350° F | 35° to 350° | 3 5/8" | 13 1/16" | 4 3/4" | 0000000 | 000000 |
| 1 1/2 | 108 | 250 psi @ 350° F | 35° to 350° | 4 1/2" | 20 3/8" | 5 13/16" | 0000000 | 00000000 |
| 2 | 132 | 250 psi @ 350° F | 35° to 350° | 4 5/8" | 21 5/16" | 6 1/16" | 0000000 | 00000000 |
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.
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 | 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 | 0000000 |
| 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.
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 | 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 | 0000000 |
| 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 |