Patent ID: 7308909
Filing Date: 2007-12-18
Classification: F16K,Y10T

Abstract:
1. A three-way valve, comprising: a coil housing having a proximal end, a distal end, two separate parallel chambers, the two parallel chambers being adapted to hold a first coil defining a normally open side and a second coil defining a normally closed side, the normally open side defining a first longitudinal axis and including a first diaphragm assembly adapted to be coupled to a plunger rod, the normally closed side defining a second longitudinal axis and including a second diaphragm assembly adapted to be coupled to a magnetic plunger; an end cap having a side that presses against the coil housing during assembly so as to form a fluid tight seal, the end cap defining a first sealing apex and second sealing apex; and at least one barbed rib disposed at the proximal end of the plunger rod and moveable with the plunger rod to engage the first diaphragm assembly and to move the first diaphragm assembly into sealing engagement with the first sealing apex of the end cap, wherein the plunger rod connects the first diaphragm assembly with a first spring, the first spring having properties for maintaining the barbed rib off of the first diaphragm assembly when the first coil is de-energized, and for lifting the barbed rib onto the first diaphragm assembly when the first coil is energized.