Pneumatically operated gas-pressure controller

Details Pneumatically operated gas-pressure controller Pneumatically operated gas-pressure controller

1989-08-16

1990-10-30

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374925, G05D 1616

Patent

active

049661884

ABSTRACT:
A pneumatically operated gas-pressure controller is provided having a setting device and a controller, wherein the controlling gas for the energy supply of the controller is drawn on the input side of the gas-pressure controller, fed to the controller by means of a throttle valve and discharged on the outlet side by means of a drain conduit. The controller supplies the setting pressure for the setting device by means of a setting pressure conduit and includes a twin diaphragm system having two diaphragms with different surface areas, the diaphragms are interconnected and arranged one above the other so as to oppose one another. A booster valve is associated with the diaphragm having the smaller surface area and is acted upon by the setting pressure.

REFERENCES:
patent: 3592223 (1971-07-01), Reese
patent: 4026513 (1977-05-01), Callenberg
patent: 4135697 (1979-01-01), Brumm

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