Valve structure

Details Valve structure Valve structure

1976-10-06

1978-09-19

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91 52, 13762566, F15B 13042

Patent

active

041146506

ABSTRACT:
A valve structure capable of being referred to as a fluid amplifier can be constructed so as to include a principal valve and a pilot valve. Each of these valves has a valve body including a pressure port, a return port and at least one service port, and has a valve member movably mounted within the valve body so as to be capable of being moved to regulate flow between the noted ports. A first passage connects the pressure ports of the pilot and principal valves and a second passage connects the service port in the pilot valve with an actuation structure in the principal valve. This actuation structure is used to move the valve member in the principal valve in accordance with the operation of the pilot valve. A control actuator is used to move the valve member in the pilot valve. Such a control actuator is preferably a pneumatic actuator.

REFERENCES:
patent: 2800143 (1957-07-01), Keller
patent: 3023781 (1962-03-01), Larsen
patent: 3450160 (1969-06-01), Tess
patent: 3474828 (1969-10-01), Wheeler et al.
patent: 3561489 (1971-02-01), Furrer
patent: 3583443 (1971-06-01), Beckett et al.

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