Zero internal pressure cartridge

Details Zero internal pressure cartridge Zero internal pressure cartridge

1981-11-06

1983-11-29

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

251282, F16K 1102

Patent

active

044176023

ABSTRACT:
A valve includes a sleeve having a water inlet and a water outlet. There is a stem movable within the sleeve to control the flow of water from the inlet to the outlet. A pressure member is positioned within the sleeve and coaxially arranged with the stem. The pressure member is fixed relative to the sleeve and is within the path of flow from the sleeve inlet to the sleeve outlet. A fixed seal is positioned between the stem and the pressure member and a seal of equal diameter, is carried by the stem and is in sealing engagement with the sleeve. The above described seals balance the stem.

REFERENCES:
patent: 2087037 (1937-07-01), McCarthy
patent: 3415280 (1968-12-01), Bucknell et al.
patent: 3693663 (1972-09-01), Tolnai et al.
patent: 3706324 (1972-12-01), Lyon
patent: 3726317 (1973-04-01), Moen
patent: 3840048 (1974-10-01), Moen

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