Pressure balanced three-way transfer valve

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

1979-04-10

1981-06-23

Cohan, Alan

Fluid handling

Systems

With selective motion for plural valve actuator

137601, 251 95, 251104, 251110, 251258, 251282, 210340, F16K 1118, F16K 3502, F16K 3144, B01D 3300

Patent

active

042744458

ABSTRACT:
A pressure-balanced three-way transfer valve for controlling fluid flow into one of two fluid lines includes a pair of cam actuated valves actuated by a single actuator to move a respective valve to an open and closed position. Pressure balancing of the valve rods is accomplished by a fluid passage through each of the respective rods to allow lower pressure to a respective balancing chamber. The valves further include respective balancing surfaces.

REFERENCES:
patent: 1752908 (1930-04-01), Hosel
patent: 1763942 (1930-06-01), Baker
patent: 2921603 (1960-01-01), Lofink
patent: 3116755 (1964-01-01), McNeal
patent: 3207183 (1965-09-01), Stuhl
patent: 3403700 (1968-10-01), Meynell
patent: 3468344 (1969-09-01), Sanford
patent: 3679060 (1972-07-01), Smith
patent: 3768654 (1973-10-01), Pearce
patent: 3770247 (1973-01-01), Nelson
patent: 3970109 (1976-07-01), Uerlichs et al.

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