Pilot valve

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This is the valve used to release the air from behind a diaphram or piston valve, causing it to open. It can vary in flow from a shrader valve to a 2" ball valve and above, but here are some symptoms that you may want a larger pilot valve:

  • "honking" of the valve. This loud noise indicates that your valve is ocilating open and closed.
  • A 'dull' sounding launch. (note that this does not apply in the case of a chamber to barrel ratio near optimum, because there isn't much energy left over to make a loud "crack".)
  • The GGDT indicates that your prefomance would be improved if you got a larger one.
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