Dual slide gate valve and method for using same

  • US 6,997,041 B1
  • Filed: 11/12/2003
  • Issued: 02/14/2006
  • Est. Priority Date: 04/11/2001
  • Status: Expired due to Term
First Claim
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1. A pressure testing kit for testing the pressure in a pipe line, comprising:

  • a main fitting having at least one end adapted to connect to an end of a pipe and align a fluid passage of the pipe with a fluid passage extending through the main fitting during use of the kit, the main fitting having formed therein a port opening on an exterior side of the fitting and aligned with a recess extending around at least a portion of an internal circumference of the fluid passage in the main fitting;

    a first test slide sized and configured to be removably inserted through the port and into the recess to block the flow of fluid through the main fitting, the test slide having a recess therein extending over a portion of the test slide that is positioned within the fluid passage to block the flow when the test slide is inserted into the fitting, the test slide having a first hole through the slide located to be placed in the fluid flow path of the fitting when the test slide is inserted into the fitting;

    a second pressure release slide sized and configured to be removably received within the recess in the test slide, the pressure release slide having a second hole therein located and positioned so it can overlap with at least a portion of the first hole in the test slide in a first, open position and so it can not overlap with the hole in the test slide in a second, closed position with seals being interposed between the test slide and the pressure release slide and located to prevent passage of fluid through both the test slide and pressure release slide when the pressure release slide is in the second position; and

    a third finish slide sized and configured to be inserted into the port and recess to seal the port.

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