Valve apparatus

Details Valve apparatus Valve apparatus

1988-06-01

1989-04-25

Michalsky, Gerald A.

Fluid handling

Systems

Valves with separate, correlated, actuators

137605, 137885, 137887, 431121, F16K 2300, F16K 1120

Patent

active

048238430

ABSTRACT:
In a valve system for controlling the flow of liquid fuel and steam to a nozzle in a large scale power plant boiler, a pair of valves are operated by rotary pneumatic actuators. Three-position operation is achieved for one of the valves by coupling the valve shafts together through a lost-motion coupling and using an actuator for the other valve which delivers more torque than the actuator which operates the three-position valve. The same actuator and coupling system can be used for straight high pressure mechanical atomization, for mechanical atomization with recirculation, and for steam atomization, with simple substitution of rotary valves.

REFERENCES:
patent: 4146056 (1979-03-01), Buchanan

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