Rate-of-flow control valve

Details Rate-of-flow control valve Rate-of-flow control valve

1996-06-18

1997-09-30

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

137488, 251 25, 251 28, F16K 3112

Patent

active

056717741

ABSTRACT:
A rate-of-flow control valve assembly actuable as a function of velocity of fluid in a conduit includes a sensing plate projecting into the conduit, substantially perpendicular to a direction of flow in the conduit and a sleeve valve located downstream of the sensing plate. The sleeve valve includes a substantially cylindrical, flexible rubber sleeve surrounded by a control chamber, and an outer rigid sleeve, the flexible sleeve adapted to vary the flow rate of the fluid through the sleeve valve. Also included is a spool valve controller operatively connected to the sensing plate and in communication with the control chamber in the sleeve valve, the spool valve operable to control the flow of fluid into and out of the control chamber as a function of movement of the sensing plate in the conduit.

REFERENCES:
patent: 1466412 (1923-08-01), Samain
patent: 2696083 (1954-12-01), Eddy
patent: 3171432 (1965-03-01), Bard
patent: 3177891 (1965-04-01), Reese
patent: 3511267 (1970-05-01), Stonich
patent: 3580272 (1971-05-01), Sherman et al.
patent: 4697616 (1987-10-01), Ashcroft
patent: 5109884 (1992-05-01), du Plessis
patent: 5158230 (1992-10-01), Curran
patent: 5174339 (1992-12-01), Pickard
patent: 5358177 (1994-10-01), Cashmore
"Nelson 800 Series Control Valve Application Guide", Nelson Irrigation Corporaiton, Jan. 1996.
"800 Series Control Valves", Nelson Irrigation Corporation brochure, Aug. 1994.

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