Hale MG - Manual (Page 15)

Muscle Pumps
1-8
C. Parts of Pump
Basic Parts of Hale Midship Centrifugal
Pump
Figure 1-7 shows the basic parts of a Hale midship
centrifugal pump. These parts are briefly described
in the following text.
Pump Body
The standard pump body and related parts are
constructed from fine grain alloy cast iron, with a
minimum tensile strength of 30,000 PSI (207
N/mm
2
). All moving parts subject to water contact.
The pumps are also available with a bronze body
for use with saltwater or harsh water applications.
Qmax and Qtwo Pumps
The Qmax and Qtwo pump body is split horizontally
on a single plane in two sections for easy removal of
the entire impeller assembly, including clearance
rings and bearings. The impeller assembly is
removed from the bottom of the pump to avoid
interference with the surrounding piping and pump
mounting on the apparatus chassis.
Two tank suction valve locations are available to
allow higher flows from the booster tank. Optional
built-in check valves are available to prevent tank
over-pressurization.
The Qmax and Qtwo pumps have two large suction
inlets, on the left and right side. Additional front
and rear inlets may be added as requested by the
customer.
GEARBOX
Figure 1-7. Midship Two-Stage Centrifugal Pump
OIL SEAL
SLEEVE
BEARING
REAR BEARING
HOUSING
BALL BEARINGS
PUMP BODY
CLEARANCE
RINGS
AUTO
LUBE
PUMP SHAFT
PUMP GEAR
SLINGER RING
PACKING OR
MECHANICAL SEAL
IMPELLERS
(2 Stage)