About Flow Control Valves
Also known as cylinder speed controls, flow control valves let you control the extension or retraction speed of your air cylinder. They regulate airflow as it passes from the valve's inlet to its outlet. Air flows freely in the opposite direction.
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Flexible-Mount Air Flow Control Valves
A swiveling outlet port allows you to make a connection from any direction. These valves adjust the volume of air exiting an air cylinder (meter out) to control the speed of air-powered equipment. They control flow in one direction as air moves from the inlet to the outlet. Air flows freely in the opposite direction. The valve body has an elbow shape, which allows you to mount them directly to cylinder ports, eliminating additional tubing between the cylinder and valve for better control and consistency than inline valves. Insert plastic or soft metal tubing into the push-to-connect outlet ports.
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.
| Inlet Pipe Size  | For Outlet Tube OD | Flow Coefficient (Cv) | Maximum Flow Rate @ 100 psi | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type | ISO Designation | Each | |
NPT Male Inlet × Push-to-Connect Female Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Nylon Plastic Body | ||||||||||
| 1/8 | 1/4" | 0.44 | 21.7 scfm | 145 | 35° to 155° | Dial | Exiting Cylinder | Meter Out | 0000000 | 000000 |
| 1/4 | 1/4" | 0.86 | 25.7 scfm | 145 | 35° to 155° | Dial | Exiting Cylinder | Meter Out | 0000000 | 00000 |
| 1/4 | 3/8" | 3.56 | 83.2 scfm | 145 | 35° to 155° | Dial | Exiting Cylinder | Meter Out | 0000000 | 00000 |
| 3/8 | 3/8" | 4.49 | 104.9 scfm | 145 | 35° to 155° | Dial | Exiting Cylinder | Meter Out | 0000000 | 00000 |
Corrosion-Resistant Single-Control Two-Direction Air Flow Control Valves
Made of PBT, these plastic valves are more corrosion resistant than valves made of aluminum or nylon. A single dial regulates the speed of airflow in two directions as it enters (meter in) and exits (meter out) equipment, and are often used to control the extension and retraction speed of an air cylinder at the same time. Insert plastic or soft metal tubing into the push-to-connect outlet ports; the outlet ports swivel 360° so you can make a connection from any direction. The elbow shape allows you to mount these valves directly to cylinder ports, eliminating additional tubing between the cylinder and valve for better control and consistency than inline valves.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Flow Rate @ 73 psi | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size | For Outlet Tube OD | Flow Coefficient (Cv) | Min. | Max. | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Each | |
PBT Plastic Body | ||||||||||
| 1/8 | 1/4" | 0.18 | 0 scfm | 7 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | 0000000 | 000000 |
| 1/4 | 1/4" | 0.18 | 0 scfm | 7 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | 0000000 | 00000 |
| 1/4 | 3/8" | 0.18 | 0 scfm | 7 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | 0000000 | 00000 |
Flow Rate @ 73 psi | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Thread Size | For Outlet Tube OD | Flow Coefficient (Cv) | Min. | Max. | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Each | |
PBT Plastic Body | ||||||||||
| 10-32 | 1/8" | 0.07 | 0 scfm | 3 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out), Entering Cylinder (Meter In) | 0000000 | 000000 |
Air-Operated Air Flow Control Valves with Safety Shut-Off
Protect air-powered equipment in emergency shut-off situations—when system pressure drops, the air pilot signal stops and these valves automatically close to stop cylinder motion, even at a mid-stroke. They control the speed of air-powered equipment by adjusting the volume of airflow. A pressure-release button allows you to exhaust any trapped air pressure from the system after shut down. Install them in pairs on cylinder exhaust ports, and use tee connectors (not included) to direct exhaust air from the cylinder to the air pilot of the opposite valve, and to connect valves to a directional control valve. The elbow shape allows you to mount them directly to cylinder ports, eliminating additional tubing or piping between the cylinder and valve for better control and consistency than inline valves.
One direction valves control flow as air exits the cylinder (meter out) and moves from the inlet to the outlet.
Valves with push-to-connect ports are for use with plastic or soft metal tubing. Insert tubing into the port.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
Push-to-Connect
Female Outlet
Air Pilot | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size | For Outlet Tube OD | Pipe Size | Thread Size | Thread Type | Flow Coefficient (Cv) | Max. Flow Rate @ 73 psi | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Features | Each | |
PBT Plastic Body—One Direction | |||||||||||||
| 1/8 | 1/4" | __ | 10-32 | UNF | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 1/4 | 1/4" | 1/8 | __ | NPT | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 00000 |
| 3/8 | 3/8" | 1/8 | __ | NPT | 0.18 | 7.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 00000 |
| For Inlet Tube OD, mm | Outlet Pipe Size | For Air Pilot Tube OD, mm | Flow Coefficient (Cv) | Maximum Flow Rate @ 87 psi | Max. Pressure, psi | Temp. Range, °F | Flow Adjustment Mechanism | Flow Control Type (ISO Designation) | Features | Each | |
Nylon Plastic Body—One Direction | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 1/4 | 4 | Not Rated | 16.77 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 0000000 |
| 8 | 1/8 | 4 | Not Rated | 8.48 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 8 | 3/8 | 4 | Not Rated | 30.9 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |
| 10 | 3/8 | 4 | Not Rated | 33.2 scfm | 145 | 25° to 140° | Dial | Exiting Cylinder (Meter Out) | Pressure-Release Button | 00000000 | 000000 |