Patent ID: 7168440
Filing Date: 2007-01-30
Classification: F04B,F05C,F16K,Y10S,Y10T

Abstract:
1. A method of making a valve body and seal assembly, the method comprising: providing a liquid elastomer; providing a valve body having a longitudinal axis and comprising: treating said peripheral seal retention groove and said top stem guide to render said peripheral seal retention groove and said top guide stem adhesion-inhibiting; providing a mold for containing said liquid elastomer, said mold comprising an adhesion-inhibiting mold shell mated with said valve body, said mold comprising said adhesion-inhibiting peripheral seal retention groove and said adhesion-inhibiting top guide stem; pouring said liquid elastomer into said mold; curing said poured elastomer in said mold; and removing said mold shell to make a valve body and seal assembly.