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Valve with movable valve seat

  • US 10,100,934 B2
  • Filed: 02/24/2016
  • Issued: 10/16/2018
  • Est. Priority Date: 02/25/2015
  • Status: Active Grant
First Claim
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1. A method of preventing deformation of a valve seat of a valve when a valve body of the valve maintains an open position, the valve including:

  • a housing having an inlet and an outlet fluidly connected by a passage, whereby a flow of fluid can enter the housing at the inlet, traverse the passage, and exit the housing at the outlet;

    the valve seat and the valve body positioned in the housing;

    the valve body moveable between a valve body closed position and a valve body open position, the valve body blocking the passage when the valve body maintains the valve body closed position to enable restriction of the flow of fluid through the passage when the valve body maintains the valve body closed position, the valve body opening the passage when the valve body maintains the valve body open position to enable allowance of the flow of fluid through the passage when the valve body maintains the valve body open position, the valve body actuatable by a trunnion;

    the method comprising the step of;

    automatically moving the valve seat relative to both the housing and the valve body with a cam comprising a central aperture through which said trunnion is positioned, with a fastener removably, fixedly securing said cam to the trunnion from a seating position in which the valve body seats with the valve seat such that the valve body is operable to restrict the flow of fluid through the passage when the valve body maintains the valve body closed position and said valve seat maintains the seating position, to a valve seat open position in which the valve seat is spaced from the valve body such that the valve body cannot contact the valve seat when the valve seat maintains the valve seat open position when the valve body is moved from the valve body closed position to the valve body open position, whereby the valve body does not impinge on the valve seat when the valve seat maintains the valve seat open position and the valve body maintains the valve body open position.

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