Numerous models of Weir SPM well service pumps have
traditionally featured a fluid end utilizing a "wing style" valve
stop which is locked in place through grooves machined into the
suction bore. This "wing style" fluid end has performed very well
for many years. However, through Weir SPM performance studies, it
was determined that during harsh environment operations, the "wing
style" fluid end was susceptible to wash occurring in the grooves
machined in the suction bore. Honoring a commitment to continual
improvement practices across all of its product lines, Weir SPM
designed a new style of fluid cylinder that eliminates the grooves
machined in the suction bore. This new design is intended to
greatly reduce the opportunity for wash to occur, ultimately
extending product life without sacrificing performance.
Click an image to enlarge
The Grooveless Fluid End utilizes a new style of valve stop that
locks under a ridge in the top of the suction bore and into the
suction cover. The valve stop is easily installed with the use of a
valve stop installation tool. The Grooveless Fluid End style is
recommended for use in all high-horsepower pump models,
particularly pumps running in harsh pumping environments, such as
tight shale fracturing operations.
Benefits of the Grooveless Fluid End Design:
• Reduces the risk of washout problems through the elimination
of the suction bore groove.
• Prevention of stress cracks which have a greater tendency to
start in the grooves.
• Allows for increased pumping durations, pressures and flow
rates.
• Extended product life in harsh pumping environment.
