Multi-stage fluid flow control device

Details Multi-stage fluid flow control device Multi-stage fluid flow control device

1994-06-27

1995-05-16

Nilson, Robert G.

Fluid handling

Systems

Flow path with serial valves and/or closures

138 46, 251334, 251902, F16K 1300

Patent

active

054152011

ABSTRACT:
A fluid flow control device includes a support brace fixably mounted in a uid flow tube. An actuator rod is slidably supported by the support brace. A plurality of conical washers are mounted in sliding engagement on the rod between a stop mechanism on the rod and the support brace. The conical washers are arranged along the rod in an abutting configuration such that adjacent conical washers abut alternately at an apex or base of the conical washers. In operation, the rod is moved so that a compressive force is applied to the conical washers. In this way, the conical washers expand in a radial fashion to reduce the fluid flow area between the device and the tube.

REFERENCES:
patent: 1654516 (1927-12-01), Wilson
patent: 3327993 (1967-06-01), Elchyshyn
patent: 3717178 (1973-02-01), Allen
patent: 3896834 (1975-07-01), Paul
patent: 4531450 (1985-07-01), Yamada
patent: 4655690 (1987-04-01), Boedecker
patent: 4852675 (1989-08-01), Wang

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