Patent ID: 7000890
Filing Date: 2006-02-21
Classification: E21B

Abstract:
1. A hydraulic section for a solenoid valve, comprising: a valve body, said valve body having fluid supply and outlet ports on an end face; an inlet flange and an outlet flange secured to said valve body, each of said inlet and outlet flanges including a fluid port, said inlet flange fluid port communicating with said fluid supply port and said outlet flange fluid port communicating with said fluid outlet port; a piston disposed within said valve body, said piston having a central bore therethrough, said piston moveable between open and closed positions to control fluid communication between said fluid supply and outlet ports; a pair of shear seal rings sealingly disposed within said piston bore, said shear seal rings having a central bore therethrough; and a supply seal plate and an outlet seal plate, said supply seal plate having a port therethough allowing fluid communication between said inlet flange fluid port and said shear seal rings central bore, said outlet seal plate having a port therethough allowing fluid communication between said outlet flange fluid port and said shear seal rings central bore.