Fluid flow control valve

Details Fluid flow control valve Fluid flow control valve

1979-05-29

1981-12-15

Rosenthal, Arnold

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

251 57, 251 635, F16K 31122

Patent

active

043054188

ABSTRACT:
An air flow control valve, for example for control of air of a ventilating flow in a vertilation system comprises an axially extending valve casing having a venturi-shaped inner face, and an axially movable valve member movable within said valve casing to vary the air flow through the valve. In order that the control movement of the valve member may vary the volume of air flow through the valve according to the same predetermined function regardless of the pressure drop across the valve, or the system in which it is incorporated, the valve casing is shaped to compensate for the variation of the drag coefficient of the valve resulting from movement of the valve member. The invention also comprises a method for determining the required dimensions of a valve casing incorporating such correction.

REFERENCES:
patent: 856981 (1907-06-01), McCarroll
patent: 2055347 (1936-09-01), Hackman
patent: 2357527 (1944-09-01), Lundquist
patent: 3415486 (1968-12-01), De Frees
patent: 4082114 (1978-04-01), Hantke

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