Patent ID: 6749173
Filing Date: 2004-06-15
Classification: F16K

Abstract:
A valve arrangement for controlling fluid flow of a working fluid, the valve arrangement comprising:a) a valve body including: i) a first chamber configured to be in fluid communication with an operating fluid; ii) a second chamber in selective fluid communication with the first chamber; iii) a third chamber in fluid communication with the second chamber; b) a solenoid valve configured to selectively provide fluid communication between the first chamber and the second chamber; c) a central shaft having a passageway, the passageway providing the fluid communication between the second chamber and the third chamber; d) a first diaphragm adjacent to a first end of the central shaft, the first diaphragm partially defining the first and third chambers; and e) a second diaphragm adjacent to a second end of the central shaft, the second diaphragm partially defining the second chamber.