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Title: Zero internal pressure cartridge

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.


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Inventors: Moen, Alfred M. (Grafton, OH)

Application Number: 06/318743
Filing Date: 1981-11-06
Publication_date: 1983-11-29
Assignee: STANADYNE INC (US)

Primary Class(es): 137/625.170 251/282
Other Classes: F16K11/078; F16K11/06; F16K11/02
US Patent Ref:
2087037July, 1937McCarthy251/282
3415280December, 1968Bucknell et al.137/625.17
3693663September, 1972Tolnai et al.137/625.4
3706324December, 1972Lyon137/625.41
3726317April, 1973Moen137/625.17
3840048October, 1974Moen137/625.41

Other Refs: GB1336989
November, 1973

Primary Examiner: Cohan, Alan
Assistant Examiner: Rivell, John A.
Attorney: Kinzer, Plyer, Dorn & McEachran
Claims: