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Temperature and volume control valve assembly

  • US 4,901,750 A
  • Filed: 09/30/1988
  • Issued: 02/20/1990
  • Est. Priority Date: 09/30/1988
  • Status: Expired due to Term
First Claim
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1. A mixing valve characterized by:

  • a housing having a first and second supply port and a discharge port;

    a first planar valving surface being rotatable about an axis perpendicular to said surface for covering and uncovering said supply ports to control total volume of liquid flowing from said supply ports;

    a first and second passageway being in communication with said respective first and second supply ports when said first planar valving surface uncovers said supply ports and having their respective downstream ends forming first and second intermediate ports that are fixed relative to said first planar valving surface;

    a second planar valving surface being generally parallel to said first planar valving surface and slidably movable over said respective first and second intermediate ports for selectively uncovering said intermediate ports for adjusting the relative proportion of flow therefrom;

    a mixed water passage downstream from said second planar valving surface in communication with one or both of said intermediate ports depending on the slidable position of said second valving surface and directing water to said discharge port;

    a first operating means for controlling the rotated position of said first planar valving surface to control said total volume and for rotating therewith the second planar surface as said first planar surface is rotated relative to said housing; and

    a second operating means for sliding said second planar valving surface relative to said first planar valving surface for adjusting the relative proportion of fluid flow from said first and second intermediate ports.

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