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Unread 06-02-2014, 15:54
gpetilli gpetilli is offline
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Re: Two regulators for one piston

Please try the experiment. What you will find is that the pressure is identical on both sides of the needle valve. These devices restrict the movement of air by making the orifice smaller. They limit the maximum kinetic energy (flow) without changing the final potential energy (pressure).

A flow restriction could be what you want if you are happy with the maximum shooter distance and what you are trying to do is create a slow piston velocity for a shorter shot (soft pass).

It will not work for the original question where they were trying increase the maximum velocity by presenting different pressures to either side of the piston. Asymmetric pressure is valid if you require less force to reset the shooter than to make the shot. Less pressure on the exhaust side will limit the required exhaust flow (less air to move) and increase the velocity of the piston. To change the pressure, you need a pressure regulator.