Hi Ed,

I believe it's simply a return to the tank from the high-pressure side via a very small orifice. How small I do not know.

Finn

On 8/10/2011 9:28 AM, Ed Anderson wrote:

 

The one I potential preventive measure/fix I have not looked into is the vapor by-pass/dump that I know a few folks are using.  I search the archive but could not find a description of this method - anyone care to provide one?