Power-operated valve

Details Power-operated valve Power-operated valve

1989-12-11

1990-11-27

Chambers, A. Michael

Fluid handling

With means for separating solid material from the fluid

Planar strainer normal to flow path

251 3005, 251 45, F16K 3112

Patent

active

049728741

ABSTRACT:
In a power-operated valve in which the pressure of a working fluid is used to control the opening and closing of the valve member in dependence on the condition of an integral power-operated bleed valve, a compensation passage being formed in the valve member to permit working fluid to close the valve when the bleed valve is closed, the compensation passage is formed in that area of the valve member which is bounded by the valve seating and which also defines the cross-sectional area of the inlet chamber, whereby the closing force on the valve member is proportional to the area of the valve housing, thus enhancing the sensitivity of the valve. In a preferred embodiment, a filter is incorporated in the valve member to filter the working fluid to the compensation passage without filtering the bulk of fluid passing through the valve.

REFERENCES:
patent: 3022039 (1962-02-01), Cone et al.
patent: 3544062 (1970-12-01), Murray
patent: 4073464 (1978-02-01), Hansen et al.
patent: 4235414 (1980-11-01), Lis

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