Fluid flow control valve

Details Fluid flow control valve Fluid flow control valve

1990-08-16

1991-07-30

Michalsky, Gerald A.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1376361, 137863, 251 5, 251331, F16K 706, F16K 707, F16K 31128

Patent

active

050352598

ABSTRACT:
A valve for use e.g. as a pilot valve in an offshore water deluge fire fighting system has a ported cylindrical body and an elastomeric sleeve defining between them an annular passage for flow between the various ports. Selected ports can be closed by means of captive balls which are cammed out by a central spool to deform localized areas of the sleeve into sealing contact with the housing wall surrounding the port openings. In this way the moving parts of the valve are isolated from the fluid by the sleeve and problems of sticking, e.g. caused by salt deposits when used with seawater, are avoided. In another embodiment, a flat pad of elastomeric material is used to the same effect in a ported body defining a planar flow passage.

REFERENCES:
patent: 2519448 (1950-08-01), Fairchild
patent: 2812154 (1957-11-01), Nordstrand
patent: 2881958 (1959-04-01), Sheen
patent: 2928421 (1960-03-01), Nordstrand
patent: 3371677 (1968-03-01), Connolly
patent: 3433454 (1969-03-01), Falkenblad et al.
patent: 3468344 (1969-09-01), Sanford
patent: 3477693 (1969-11-01), Bezanis
patent: 3515169 (1970-06-01), Berg et al.
patent: 3543796 (1970-12-01), Durant
patent: 3757583 (1973-09-01), Ludewig
patent: 3942756 (1976-03-01), Brumm et al.
patent: 4138087 (1979-02-01), Kruse et al.

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