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On 20 Feb 2006 at 17:31, Russ Wolfe wrote: > If you are getting 18-19psi after the pump shuts off, that is correct. > That is the "cracking pressure" of the regulator. The pressure where the > seat completely closes. And if it held at 14psi for 30 minutes, that > means the pump check valve is working pretty good. > The seat in our regulator is brass on steel, if I remember right. The > modern regulators are a rubber seat washer on stainless steel. The check valve seal in our pumps is rubber against steel, and the seal in our regulator is steel against steel. Both are very nicely made, but neither seals perfectly. I agree with Russ that the pressure drop seen here is perfectly fine and normal. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~