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BACKWATER VALVE WITH CONTROL LINKAGE

  • US 20180094417A1
  • Filed: 11/21/2017
  • Published: 04/05/2018
  • Est. Priority Date: 11/16/2010
  • Status: Active Grant
First Claim
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1. A backwater valve, comprising:

  • a hollow valve body having an inlet and an outlet;

    a valve member pivotally movable about a pivot axis between an open position in which the valve member is away from the inlet and a closed position in which the valve member directly engages and covers the inlet to prevent fluid flow through the inlet, the pivot axis being disposed above the inlet;

    a movable pressure member positioned in the hollow valve body having a release position above the valve member that permits the valve member to pivot freely, and a locking position immediately adjacent to the valve member in which the pressure member exerts a force upon the valve member to secure the valve member in the closed position; and

    a manual external locking activator accessible from outside of the hollow valve body that moves the pressure member between the release position and the locking position.

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