The NOV JWS-340 special is a reciprocating triplex well service pump rated to a maximum working pressure of 10000 PSI at 450 SPM, with 3 in and 4 in among its listed liner sizes. Unlike mud pumps that run continuously, this workover pump is built for extreme pressure cycles in short bursts followed by downtime, a pattern that demands exceptional fatigue resistance from pressure-bearing parts such as the fluid end and crankshaft. Its power end uses an all-in-one high-strength forged steel frame instead of a welded or cast iron structure, eliminating weld-related stress concentration and giving strong resistance to torsion and bending so the drive train stays accurately aligned under heavy reciprocating loads. We supply fluid-end replacement parts for this model across Canada, the United States and international oil & gas markets.
FAQ
What is the maximum working pressure of the NOV JWS-340 special?
The factory-rated maximum working pressure is 10000 PSI at a rated speed of 450 SPM.
What liner sizes are listed for the JWS-340 special?
The factory sheet lists 3 in and 4 in liner bores. For the complete size range and matching outputs, contact us and we will confirm the details.
Why is the JWS-340 special built for intermittent duty?
Workover service imposes extreme pressure cycles in short bursts with downtime in between, so the pump is designed around fatigue resistance, including a one-piece forged steel power end frame that resists torsion and bending.
Do you stock parts for the NOV JWS-340 special?
We currently list no stocked items for this model. Please contact us for current availability of plungers, liners, valves, seats and packing.
Can you ship JWS-340 special parts internationally?
Yes. These pump parts ship under HS code 84139100 to customers in Canada, the United States and other international oil & gas markets.