Electrically operated valve with balanced port design

Details Electrically operated valve with balanced port design Electrically operated valve with balanced port design

1978-04-20

1980-12-16

Schwadron, Martin P.

Valves and valve actuation

Heat or buoyancy motor actuated

60529, 236 68R, 236101B, 251282, F16K 3104, G05D 2308

Patent

active

042391776

ABSTRACT:
A regulator valve having a balanced port construction is provided with a balanced piston design, the piston being operated under positive control in all valve positions. The piston regulates fluid flow through the valve. The piston is operatively connected to a heat motor, and the electrical energy input to the heat motor is used to adjust piston position. Because of the balanced piston design, valve operation is dependent solely upon electrical energy input to the heat motor, and precise control of a refrigeration system, for example, may be maintained.

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patent: 3177892 (1965-04-01), Grandstaff
patent: 3189277 (1965-06-01), Fox
patent: 3967781 (1976-07-01), Kunz

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