Quote:
Originally posted by Gary Bonner
The flow control valves only limit flow in one direction. They're kind of like a one way valve, but but instead of completely stopping the flow in one direction, you can adjust it. When you mount them directly on the cylinders, flow into the cylinder is not restricted, only the exhaust. The speed of the piston is then limited by how fast the air exhausts, and extend and retract speeds can be individually adjusted. They would work attached to the valve, but the action of the piston under load would be more uniform if the valves are on the cylinder.
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Okay... this makes sense... but why is the action of the piston under load more uniform if the valves are on the cylinder?