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Old 07-17-2012, 08:05 PM   #2 (permalink)
.67cal Buwwets!
crazyorigin's Avatar
Join Date: Mar 2008
Location: Central Southern Upstate NY

Early SS25's used delrin valve pins. They proved to be problematic so they were changed to stainless with an o ring seal.

My guess us your valve pin seal is bad or your pressure us to low like you mentioned. It is easier to remove the pump kit and pull the valve out the front, it is also easier on the valve body o rings.
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