Patent ID: 7921880

Claim:
A valve comprising: (a) a tube body having a first port through which fluid enters and leaves the three-way valve, and the tube body including a tube body threaded section; (b) a cage body having a second port and a third port through which fluid enters and leaves the three-way valve, and the cage body including a cage body threaded section which allows a threaded interface for an operative connection to the tube body threaded section; (c) a solenoid coil secured to the tube body for generating a magnetic flux field; (d) a plunger located inside the tube body having a magnetic characteristic which allows proportional movement upon interaction with the magnetic flux field of the solenoid coil; (e) a tube spring located between the tube body and the plunger for opening and closing the valve; (f) a non-magnetic residual washer located between the tube and the plunger which prevents latching due to residual magnetism; (g) a pilot pin located adjacent to the plunger; (h) a plunger spring located between the plunger and the pilot pin; (i) a first poppet selectively engaging the cage to control flow of fluid between the first port and at least the second port; (j) a second poppet selectively engaging the cage to control flow of fluid with at least the third port; (k) a check spring connecting to the second poppet to allow the second poppet to close; and wherein the second port comprises an intermediate pilot port.