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US 2002/0000255 A1Published application
Balanced fluid control valve
AssigneeSturman BG, LLC
InventorBenjamin Grill
Life of this patent
Estimating the term…
Abstract
A dynamically balanced fluid control valve controls a fluid between two connection ports. A tube couples two diaphragms at opposing ends of the tube. A valve is coupled to the tube between the opposing ends to control a valve port. Actuators move the transfer tube to move the valve. The diaphragms dynamically balance the force exerted by the fluid on the valve in both the open and closed positions of the valve.
Claims18
A fluid control valve that controls a flow of a fluid, comprising:
- a housing that has a first connection port, a second connection port, and a valve port;
- a transfer tube having a first end and an opposing second end;
- a valve coupled to the transfer tube between the opposing ends, the valve located adjacent to the valve port;
- a first actuator that moves the transfer tube from a first position to a second position to move the valve away from the valve port and open the valve port to allow fluid communication between the first connection port and the second connection port;
- a second actuator that moves the transfer tube from the second position to the first position to move the valve into contact with the valve port and close the valve port to prevent fluid communication between the first connection port and the second connection port;
- a first diaphragm coupled to the first end of the transfer tube, the first diaphragm having an effective area that is in fluid communication with the fluid and is approximately equal to the area of the valve port;
- and,
- a second diaphragm coupled to the second end of the transfer tube, the second diaphragm having an effective area that is in fluid communication with the fluid and is approximately equal to the area of the valve port, the first diaphragm and the second diaphragm dynamically balancing the force exerted by the fluid.
5 more elements
A fluid control valve that controls a flow of a fluid, comprising:
- a housing that has a first connection port, a second connection port, and a valve port;
- a force transfer means having a first end and an opposing second end;
- a valve means coupled to the force transfer means between the opposing ends, the valve means located adjacent to the valve port for closing the valve port;
- a first actuating means for moving the valve means from a first position to a second position such that the valve means is moved away from the valve port and the valve port is open to allow fluid communication between the first connection port and the second connection port;
- a second actuating means for moving the valve means from the second position to the first position such that the valve means closes the valve port and prevents fluid communication between the first connection port and the second connection port;
- a first pressure responsive means coupled to the first end of the force transfer means, the first pressure responsive means having a first effective area to produce a force responsive to the pressure of the fluid, the effective area being approximately equal to the area of the valve port;
- and,
- a second pressure responsive means coupled to the second end of the force transfer means, the second pressure responsive means having a second effective area to produce a force responsive to the pressure of the fluid, the effective area being approximately equal to the area of the valve port, the first pressure responsive means and the second pressure responsive means dynamically balancing the force exerted by the fluid.
5 more elements
Dependencies are inferred from the claim text.