Hermetically sealed four-way valve

Details Hermetically sealed four-way valve Hermetically sealed four-way valve

1976-08-30

1978-08-22

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

137874, 137875, 137876, F16K 1110

Patent

active

041082060

ABSTRACT:
This invention relates to an electromagnetically controlled four-way valve and has as an objective the creation of such a valve as to be exceptionally fast acting and fast cycling, while requiring comparatively little power or force to operate it, a valve that will be especially suited to high flow, low pressure applications, a valve of considerable capacity that does not require a smaller valve to pilot it, or a minimum line pressure and back pressure to actuate it, but does require a slight fluid flow, a valve that will have a low flow resistance factor, a valve that is hermetically sealed to the outside environment, a valve of simple construction (only two moving parts), a valve that is easily and inexpensively produced, a valve in which the application does not require a positive no leak shut-off to flow, but of which application does allow for a neutral position with all ports open, or will require no active neutral position at all--the neutral position only being passed through to make the other positions.
The unique character of the valve is made possible by the utilization of natural phenomena indigenous to fluid flow (using the power already in the controlled fluid to assist in control), by the minimization of mechanical resistances such as friction, mass of moving parts, and distance of stroke, and by the splitting of the actuating and hold-in functions.

REFERENCES:
patent: 2518574 (1950-08-01), Skopecek
patent: 3307583 (1967-03-01), Harter
patent: 3949774 (1976-04-01), Morrow

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