Patent Number: 8,870,554

Title: Pump with wear sleeve

Abstract: A pump is disclosed, 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.

Inventors: Kent; Gerald Edward (Edmonton, CA)

Assignee: Allen R. Nelson Engineering (1997) Inc.

International Classification: F04B 49/10 (20060101)

Expiration Date: 2018-10-28 0:00:00