Patent ID: 9022069
Filing Date: 2015-05-05
Classification: F16K,Y10T

Abstract:
1. A solenoid operated valve, comprising: a solenoid portion; a valve member portion connected to the solenoid portion, the valve member portion having a body including an inlet port, first and second valve seats, an outlet port, and an inner wall defining a valve member receiving cavity; a valve member slidably disposed in the body, the valve member having a piston at one end of the valve member that slidingly seals against the inner wall of the body, a shoulder at an opposite end of the valve member that slidingly seals against the inner wall of the body, and a valve element positioned between the piston and the shoulder of the valve member that extends between the first and second valve seats of the body, the valve element defining a valve closed position when positioned in direct contact with the first valve seat, wherein the inlet port and the outlet port extend through the body at locations positioned between the piston and the shoulder of the valve member; and a bleed port created in the body between the first valve seat and the outlet port through which in the valve closed position continuously flows a bleed flow of a pressurized fluid that passes along the valve member between the valve element and the piston and to the outlet port to oppose contaminant flow into the solenoid operated valve toward the solenoid portion during a back-flush of the solenoid operated valve.