300FWF996 Page 13
FLUID END (FIGURE 2-5)
This fluid end incorporates the traditional
flange-mounted fluid end design, which
simplifies installation and removal by simply
removing of the stay-rod nuts. These stay-
rod nuts must be made-up tight and remain
tight
during
operation.
(See
Torque
Requirements on page 36). Plungers are
installed and removed through the front
suction covers.
Plunger packing is
accessible by removal of the packing nut or
gland. Plunger packing lube holes are
provided in the fluid cylinder.
The conventional fluid end Valve-Over-
Valve configuration offers field a proven
arrange-ment in terms of the valve and
spring performance. Improvements in the
fluid end life come from increasing fluid
cylinder cross sections in areas of maximum
stresses by reducing internal dimensions
through the use of the twist-type valve stop.
New sophisticated methods of metallurgical
control allow us to obtain steels with very
consistent
chemical
compositions
and
mechanical properties. These forgings have
higher tensile, yield, hardness and low-
temperature impacts than conventional
forgings.
FIGURE 2-5: GD-2500Q Fluid End
HALLIBURTON EXHIBIT 1013, Page 19
