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PUMP WITH WEAR SLEEVE

  • US 20130071256A1
  • Filed: 09/20/2011
  • Published: 03/21/2013
  • Est. Priority Date: 09/20/2011
  • Status: Active Grant
First Claim
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1. A pump, comprising:

  • a pump block defining a cylinder in which a piston is mounted for reciprocation and positive displacement of fluids from an intake port of the pump block to a discharge port of the pump block;

    an intake valve located in the intake port of the pump block and a discharge valve located in the discharge port of the pump block;

    the intake valve having a valve plug that has a closed position in which the valve plug is seated on a valve seat in the intake port;

    a wear sleeve lining at least a portion of the intake port upstream of the valve seat;

    a pressure sensor upstream of the intake valve for detecting a pressure condition indicative of failure of the intake valve to provide a seal when the intake valve is in the closed position; and

    a controller responsive to the pressure sensor to send a signal to stop operation of the pump upon detection of the pressure condition.

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