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Unread 06-02-2014, 09:06
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Re: Two regulators for one piston

Quote:
Originally Posted by Bill_B View Post
Matt could have shown the other side of the fitting which has the symbols for the flow control meter out valve on it. There is also a flow control meter in valve available. I'll try to attach pictures and symbols.
A flow control valve will do the opposite of what is desired. A flow control valve does not change the final pressure, but changes how fast the air can enter/leave the cylinder and therefor slows down the travel. He is trying to exhaust the air in the cylinder faster. Since we are limited by the diameter of the valve, he is trying to limit the pressure on the exhausting side, and therefor the amount of air that needs to be expelled. To move the piston, you need more pressure on one side than the other, which we do by venting one side - he is trying to start from a more favorable delta pressure.