Thread: increasing flow rate to pnuematic cylinder
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Unread 01-02-2010, 14:39
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Re: increasing flow rate to pnuematic cylinder
Quote:
Originally Posted by laxcompute View Post
1. Flow rate to the cylinders is limited both by the diameter of the provided tubing (either .106" or .160", I can't remember which at the moment) and the maximum legal cV on the valves used, which is 0.32 (unitless). Basically, that means that air moves slowly. You could use cylinders with the smallest diameter, but that of course limits your force.
Cv is not unitless. The Cv of a valve is the "flow rate in US Gallons per minute [gpm] of water at a temperature of 60 Fahrenheit with a pressure drop across the valve of 1 psi."

Source: http://www.valvias.com/flow-coefficient.php

Also see:
http://en.wikipedia.org/wiki/Flow_coefficient