Fluid proportioning valve

Details Fluid proportioning valve Fluid proportioning valve

2006-08-07

2008-12-16

Hepperle, Stephen M (Department: 3753)

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

C137S454200, C137S496000

Reexamination Certificate

active

07464722

ABSTRACT:
A fluid proportioning valve meters flow of pressurized inlet fluid in proportion to a pressure drop between the inlet and outlet of the valve. A pressure acutated, return biased poppet valve is actuated by the fluid above threshold fluid pressure to meter fluid to the outlet against spring force. The poppet is annular and has a circular metering edge that controls flow through circumferential orifices in a valve guide. Smooth stable flow is achieved by shearing action of the metering edge over the orifices. Sliding point contact with the poppet valve by non-ferrous convex buttons to eliminate galling and reduce particle contamination within the valve.

REFERENCES:
patent: 2655173 (1953-10-01), Overbeke
patent: 3103950 (1963-09-01), Gulick
patent: 3292656 (1966-12-01), Armstrong
patent: 4176680 (1979-12-01), de Launay
patent: 4256137 (1981-03-01), de Launay
patent: 4648424 (1987-03-01), Takahashi et al.
patent: 6390129 (2002-05-01), Jansen et al.
patent: 6474359 (2002-11-01), Smith, III
patent: 2005/0097880 (2005-05-01), Jansen

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