Patent ID: 7673846
Filing Date: 2010-03-09
Classification: F16K,Y10T

Abstract:
1. A pressure regulating valve comprising: a body having an outer surface, the interior of the body separated into an inlet chamber adapted to be disposed in fluid communication with a fluid at a process pressure, and an outlet chamber, the body further including at least one inlet passage disposed in fluid communication with the inlet chamber and the outer surface, and at least one outlet passage communicating with the outer surface and the outlet chamber wherein the body is a generally cylindrical tube having a bulkhead disposed therein to separate the interior of the body into the inlet chamber and the outlet chamber; a reference housing adapted to be disposed in fluid communication with a fluid at a predetermined reference pressure; and an annular membrane disposed between the body and the reference housing, so as to circumscribe both the inlet and outlet passages; wherein the membrane is arranged such that, when the reference pressure is higher than the process pressure the membrane is engaged with the at least one outlet passage, and when the process pressure is higher than the reference pressure, the membrane is not engaged with the outlet passage; and at least one compressible member disposed in the inlet chamber or the outlet chamber.