Pressure balanced three-way transfer valve

Details Pressure balanced three-way transfer valve Pressure balanced three-way transfer valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/108

F16K 11/00 (2006.01) F16K 11/16 (2006.01)

Patent

CA 1131542

2-251 Canada PRESSURE BALANCED THREE-WAY TRANSFER VALVE ABSTRACT OF THE DISCLOSURE A pressure-balanced three-way transfer valve for controlling fluid flow into one of two fluid lines is provided, so designed that the fluid pressure and lower pressure acting on the opposed pressure- receiving surfaces of the valve actuating means and valve members are substantially balanced; whereby such fluid pressures do not interfere with movement of the first and second valve members, by providing on the valve members pressure-receiving surfaces exposed to fluid pressure in the valve chamber and opposed pressure-receiving surfaces exposed to a pressure lower than fluid pressure in a pressure-equalizing chamber; the valve-actuating means having pressure-receiving surfaces exposed to fluid pressure in the valve chamber and opposed pressure-receiving surfaces exposed to pressure lower than fluid pressure; and the opposed pressure-receiving surfaces of the first and second valve members and first and second cam-following valve- actuating means being of such surface areas that the opposed pressure receiving surfaces are substantially balanced.

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