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Check Valve
US Patent:
4674529, Jun 23, 1987
Filed:
May 14, 1986
Appl. No.:
6/863162
Inventors:
Sean M. Ferguson - Houston TX
International Classification:
F16K 1500
US Classification:
137375
Abstract:
This invention is concerned with a check valve made up of two housings or castings, each of which has a corrosion resistant liner which provides improved support and operation of the ball or check member and increased resistance to liner collapse when operating under vacuum conditions.