Valve assembly

Details Valve assembly Valve assembly

1990-09-19

1991-10-22

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1502

Patent

active

050586238

ABSTRACT:
A valve assembly is disclosed. The valve assembly includes a valve body having inlet and outlet openings. A central cavity is defined by the valve body. A movable poppet is positioned within the cavity. A plug closes the cavity and a spring extends between the rear end of the poppet and the plug. The rear end of the poppet defines a cylindrical recess and the valve body defines a drain opening adjacent the outlet. The cylindrical recess provides a fluid passage to the drain opening. The poppet is opened when the fluid pressure on the inlet side overcomes the force of the spring and is closed when the force of the spring is greater than the fluid pressure force on the front of the poppet.

REFERENCES:
patent: Re23144 (1949-09-01), Andersen
patent: 1094543 (1914-04-01), Donnelly
patent: 1405525 (1922-02-01), Le Cain
patent: 1690501 (1928-11-01), Potts
patent: 1705293 (1929-03-01), Horthy
patent: 1776726 (1930-09-01), Gross
patent: 1879020 (1932-09-01), Balsiger
patent: 2007590 (1935-07-01), Baillio
patent: 2331378 (1943-10-01), Dykeman
patent: 3456686 (1969-07-01), Kemble
patent: 3966119 (1976-06-01), Harter et al.
patent: 4209062 (1980-06-01), Woodhull, Jr.
patent: 4308652 (1982-01-01), Woodhull, Jr.

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