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Storage tank shutoff valve

  • US 5,472,012 A
  • Filed: 01/14/1994
  • Issued: 12/05/1995
  • Est. Priority Date: 01/14/1994
  • Status: Expired due to Term
First Claim
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1. An assembly adapted for cutting off the flow of a fluid into a storage tank or the like in response to a predetermined fluid level in the tank, comprising:

  • a) a housing, said housing having an inlet and an outlet and an internal axial flow passage-therebetween, said housing being adapted for placement in a storage tank;

    b) a valve assembly disposed in said housing, said valve assembly including a shutoff valve movable within said housing in an axial direction between a first open position permitting the flow of fluid through said internal flow passage and a second closed position substantially blocking fluid flow through said internal passage;

    c) a guide associated with said housing for guiding movement of the shutoff valve in axial direction in said housing;

    d) an actuating assembly, said actuating assembly being interconnected to said valve assembly for moving said shutoff valve between said open and closed positions as a function of a fluid level in a storage tank; and

    e) a shield stationarily secured in the internal flow passage between the inlet and the shutoff valve, the shield including a radially extending portion for shielding the shutoff valve from direct fluid impingement from fluid entering the internal flow passage through the housing inlet and an axially extending portion, the axially extending portion defining a space and the shutoff valve being movable into the space defined by the axially extending portion of the shield.

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