Modulating valve sub-assembly

Details Modulating valve sub-assembly Modulating valve sub-assembly

1976-11-26

1978-03-21

Nilson, Robert G.

Valves and valve actuation

Lost motion between actuator and valve

1376275, 251 86, F16K 1116

Patent

active

040799131

ABSTRACT:
Described herein is a valve sub-assembly which, e.g., functions as a portion of a modulating valve preferably subjected to operating pressures of less than two atmospheres. This sub-assembly is especially designed to reduce hysteresis in the response of the valve to signal media. Hysteresis reduction is achieved through a departure from conventional sealing mechanism designs which achieves a reduction in the friction involved in the operation of conventional modulating valves.

REFERENCES:
patent: 3512552 (1970-05-01), Dobrikin et al.
patent: 3752190 (1973-08-01), Brake

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