HH-80 3" x 3" Pump

Size is 3" x 3"
450 GPM maximum
300 FT Head maximum

HH-80
	Cutsheet
	Curve
	Drawing

Description Of Unit

The pump is an end suction centrifugal pump equipped with a fully automatic priming system. The priming system 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 that is mounted above the air/water separation tank. With this device, suction lifts up to 28 ft (8.5m) can be achieved. The pump is fitted with a priming isolation valve for use in flooded suction conditions to prevent the flow of water into the air compressor system.

The pump can handle raw unscreened sewage, trade effluents, thick slurries and solids up to a normal limitation of 1.25" (32mm) diameter.

The impeller is of a fully open design with balance holes and back pump out vanes. The pump utilizes a three vane impeller design for pumping under most conditions. The impeller is mounted on a 431 stainless steel shaft 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 plates, to simplify and reduce costs of pump rebuilds.

The mechanical seal is leak tight and suitable for sewage and sludges. The mechanical seal is fitted with silicon carbide rotating and stationary faces and Buna-N or Viton seal elastomers. The arrangement incorporates an oil-filled seal housing to lubricate the seal faces.

Material options include: Ductile Iron pump casing and fitted with 316 stainless steel or 2% chromium steel alloy (340 BHN) impeller and wear plates; complete 316 stainless steel wet ends; complete CD4MCu wet ends; or complete chromium alloy  wet ends.

Guards are fitted as standard to all moving parts.