Valve Function Valve Function |
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Maximum Pressure Maximum Pressure |
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Maximum Flow Rate Maximum Flow Rate |
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About Precision Flow-Adjustment Valves
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Matching Flow Diagrams to Replace an Air Directional Control Valve
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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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Choosing an Air Directional Control Valve
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Threaded Precision Flow-Adjustment Valves
Also known as needle valves, these adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. Turn the handle to adjust flow. All valves have metal-to-metal seats that resist temperature fluctuations.
Locking handles have a nut to prevent accidental flow adjustment.
Internal check valves actuate when the pressure changes to stop flow from the controlled direction and allow free flow in the opposite direction. Valves with an internal check valve are often used to control the speed of air cylinders and air-powered motors.
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: Needle
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon
- Seal Material: Fluoroelastomer Rubber/PTFE Plastic
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Each | |
Brass Body with Locking Knob Handle | ||||||
|---|---|---|---|---|---|---|
| 1/4 | 0.43 | 2000 psi @ 400° F | -15° to 400° | 2" | 0000000 | 000000 |
| 3/8 | 0.78 | 2000 psi @ 400° F | -15° to 400° | 2 1/4" | 0000000 | 00000 |
Brass Body with Locking Knob Handle and Internal Check Valve | ||||||
| 1/4 | 0.54 | 2000 psi @ 400° F | -15° to 400° | 2 3/8" | 0000000 | 00000 |
| 3/8 | 0.83 | 2000 psi @ 400° F | -15° to 400° | 2 3/4" | 0000000 | 00000 |
Air-Exhaust Flow Control Valves
Install these valves in the exhaust ports of air directional control valves to control exhaust air speed without needing access to your cylinder. They control flow in one direction as air moves from the inlet to the exhaust port (meter out). Air flows freely in the opposite direction. Valves include a muffler to reduce the exhaust noise.
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 | |||||||||||
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| No. of Flow Ports | Inlet Size | Exhaust Connection Type | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Max. Pressure, psi | Body Material | Hex Size | Dia. | Lg. | Each | |
Threaded Male Inlet | |||||||||||
Thumb Screw Flow Adjustment Mechanism | |||||||||||
| 2 | M5 Metric | None (To Atmosphere) | 3.35 | 0.06 | 145 | Brass | 8mm | 10mm | 23.4mm | 00000000 | 000000 |
| 2 | M7 Metric | None (To Atmosphere) | 4.24 | 0.075 | 145 | Brass | 8mm | 10mm | 26.9mm | 00000000 | 00000 |