HH-125c Information
Fact Sheets
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Drawings
E-Electric; T-Trailer; S-Skid
HH-125c 6" x 4" High Head Centrifugal Pump
 Description Of Unit
The pump is an end suction centrifugal pump with a fully automatic
priming system built into the design. This enables the pump to self-prime
from completely dry conditions, even with extended suction lines. Liquid
is not required to prime the pump, and therefore, in temporary dry trench
conditions, the pump will “snore” until such time as liquid is available.
The priming system utilizes a standard air compressor, which feeds a
pneumatic ejector mounted above the air/water separation tank. With this
device, suction lifts up to 28ft. (8.5m) can be achieved.
The pump can handle raw unscreened sewage, trade effluents and solids up to
a normal limitation of 3.0” (76.2 mm) diameter.
The impeller is of a 2 port enclosed non-clog design, of cast iron
construction. It is mounted on a LaSalle 1144 stress proof shaft with AISI 416
stainless steel shaft sleeve fitted to a cast iron bearing bracket; which
also provides concentric location for the pump volute.
The pump casing is fitted with replaceable wearing parts, consisting of the
impeller and wear rings, to simplify and reduce costs of pump rebuilds.
The mechanical seal is leak tight and suitable for sewage and sludge. The
mechanical seal is fitted with tungsten carbide vs. silicon carbide faces and
Buna-N or Viton seal elastomers. The arrangement incorporates an oil-filled
seal housing to lubricate the seal faces.
Material options include: Cast Iron bearing frame with a Cast Iron pump
casing and fitted with 316 stainless steel or CD4MCu impeller and wear rings;
complete 316 stainless steel wet ends; complete CD4MCu wet ends.
Guards are fitted as standard to all moving parts.
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