Proportional flow valve

Details Proportional flow valve Proportional flow valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/38

F16K 31/02 (2006.01) F16K 31/06 (2006.01)

Patent

CA 2024371

PROPORTIONAL FLOW VALVE Abstract of the Disclosure A proportional flow valve wherein inlet fluid pressure urges the valve member toward the valve set. A pressure member, which may be a rolling diaphragm, has an effective area about equal to that of the valve orifice and is also subjected to inlet fluid pressure, when the valve is open, to counterbalance the force of the inlet fluid pressure on the valve member. A spring constantly urges the valve member toward the valve seat, to close the valve, and a solenoid actuator, when energized, moves the valve member way from the valve seat against the force of the spring. The distance which the valve member moves from the seat, and hence the rate of flow through the valve, is proportional to the amount of current applied to the solenoid actuator. A pilot valve controls the flow of inlet fluid pressure to the pressure member.

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