HH-225c Information
Fact Sheets
Curves
Drawings
E-Electric; T-Trailer; S-Skid
HH-225c 12" x 8" 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, thick slurries and solids up
to a normal limitation of 3.375” (85.7mm) diameter.
The impeller is of a semi-open 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.
|
