Guiding controlled electromagnetic valve with pressure sensitive diaphragm

Application Number: 00108266
Application Date: 2000.04.28
Publication Number: 1272599
Publication Date: 2000.11.08
Priority Information: 1999/5/3 US 09/304,151
International: F15B13/02
Applicant(s) Name: Husco International Inc.
Inventor(s) Name: Yang Xiaolong
Patent Agency Code: 31100
Patent Agent: wang hongxiang
Abstract A pilot operated control valve has a body with an inlet and an outlet. A main valve poppet is movable within the body to selectively control flow of fluid between the inlet and outlet. The main valve poppet has a flexible diaphragm with a pilot passage therethrough which is opened and closed by movement of a pilot poppet. The diaphragm flexes due to a pressure differential that acts on the pilot poppet, which flexing compensates for adverse effects that the pressure differential has on the operation of the pilot poppet.