Document P/N: 2P136539
Release Date: 05/25/2017
Revision: F
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Yearly (or as required) Preventive Maintenance:
Replace worn plungers and packing brass.
Replace worn or corroded valve covers, suction valve stops, packing nuts, discharge flanges, pump
tools, etc.
Replace all discharge flange seals and suction manifold seals.
Replace any defective gauges and instruments.
It is difficult to assess wear and tear on a fluid end based solely on hours operated, due to the variations in duty
cycle and types of service. Constant monitoring of the fluid end and components will extend the life of our fluid
end.
Expendable Components:
A. Expendable life improvement techniques:
a. Valves and valve seats
Valves and valve seats wear out faster than any other expendable due to valve seat wear and
tear from frac sand and cavitation corrosion pitting. Valve life can be extended by keeping valve-
flow-through velocities below 12 feet/sec and by using a properly sized, correct style and
properly installed pulsation suction stabilizer.
WARNING:
VALVES AND VALVE SEATS MUST BE REPLACED PRIOR TO FAILURE. FAILURE OF A
DISCHARGE AND SUCTION VALVE IN THE SAME PLUNGER PRESSURE CHAMBER CAN RESULT
IN DISCHARGE (WELL BORE) PRESSURE ENTERING THE SUCTION MANIFOLD. FAILURE OF THE
SUCTION MANIFOLD, SUCTION FLOW LINES OR HOSES CAN RESULT. INJURY, DEATH OR
ENVIRONMENTAL DAMAGE CAN OCCUR. USE OF A CHECK VALVE IN THE FLOW LINE IS
RECOMMENDED.
