1. Flow Controls
Controls speed by metering the air into or out of an actuator
Fixed Orifice
Variable Orifice

2. Fixed Orifice Flow Control
Has a hole drilled of a specific size
Should not be removed or changed to a variable type!

3. Variable Orifice Flow Control
Can be adjusted
Sometimes referred to as a needle valve

4. Flow Control With Internal Check Valves

5. Flow Controls With Internal Check Valves
Allows free flow in one direction and controlled flow in the
opposite direction
Flow control
connected in
rod side of
the cylinder

6. Flow Controls With Internal Check Valves
Allows free flow in one direction and controlled flow in the
opposite direction
Flow control
connected in
rod side of
the cylinder

7. Flow Control Troubleshooting
Flow controls are trash catchers!
Turn the adjustment several turns CCW, then attempt to
move the actuator several times.
Reset the valve to its original setting.