Throttle device for a pressure control apparatus

Details Throttle device for a pressure control apparatus Throttle device for a pressure control apparatus

1997-08-06

1999-04-06

Ferensic, Denise L.

Pipes and tubular conduits

With flow regulators and/or baffles

Restrictors

138 46, 123514, F15D 102

Patent

active

058905189

ABSTRACT:
In a throttle device for a pressure control apparatus, the return line inside a pressure control valve or in the line course outside it is provided with a cross-sectional constriction that throttles the flow. This cross-sectional constriction is variable automatically, as a function of the flow rate and hence of the prevailing pressure, in such a way that at a low flow rate a small flow cross section and at a high flow rate a large flow cross section results. It is thus possible to design the return line pressure as high as possible over a wide range of the flow rate and to keep the pressure difference between the inflow line and return line slight and thereby to minimize the noise production in the pressure control valve.

REFERENCES:
patent: 2664095 (1953-12-01), Magni
patent: 2899979 (1959-08-01), Dahl et al.
patent: 3566902 (1971-03-01), Muller
patent: 4228956 (1980-10-01), Varner
patent: 4492339 (1985-01-01), Kreitzberg
patent: 5141029 (1992-08-01), Naugle et al.
patent: 5241931 (1993-09-01), Radel
patent: 5285759 (1994-02-01), Terada et al.

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