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SP Series Self-priming Sewage Pump

Self-priming Sewage Pump

SP Series Self-priming Sewage Pump

Single-stage single-suction non-clogging self-priming sewage pump.

Open unclogged impeller, axial inlet and radial outlet.

The use of back-pull structure, maintenance does not need to dismantle the pump body and pipeline.

  • Flow rate 10 ~ 750m3/h 
  • Head 3m ~ 38m 
  • Temp 0℃ ~ +40℃
  • Voltage 220V/380V
  • Material HT200/QT400


● Aquaculture 
● Agriculture
● Municipal sewage drainage
● Paper-making industry and textile industry
● Food & drug factory 
● Mining
● Other sewage drainage system

Features and Advantage

Stable performance, fast self-absorption and high absorption.
Convenient maintenance.
No blockage, strong passing ability, easy to use. 

Performance Parameter

Pump Size Max Flow Max Head Solids Size
SP-2 3 x 3 inches 50 x 50 mm 11880 USgpm 45 m³/h 1115 feet 35 metres 1.5 inches 38 mm
SP-3 3 x 3 inches 80 x 80 mm 26400 USgpm 100 m³/h 140 feet 42 metres 2.5 inches 63.5 mm
SP-4 4 x 4 inches 100 x 100 mm 42000 USgpm 160 m³/h 112 feet 34 metres 3 inches 76 mm
SP-6 6 x 6 inches 150 x 150 mm 79000 USgpm 300 m³/h 115 feet 35 metres 3 inches 76 mm
SP-8 8 x 8 inches 200 x 200 mm 153000 USgpm 580 m³/h 130 feet 39 metres 3 inches 76 mm
SP-10 10 x 10 inches 250 x 250 mm 19800 USgpm 750 m³/h 175 feet 53 metres 3 inches 76 mm

External Shimless Adjustment

The external shimless cover plate allows for easy adjustment of the clearance between the impeller and the wearplate. This process eliminates the need to realign belts, couplings or other drive components. In turn, the working height of the seal assembly and impeller back clearance are not disturbed. The unique collar and adjusting screw allow for incremental adjustments of the wearplate clearance with the turn of a hand. Once adjustments have been made, the collar locks in place maintaining the clearance setting even if the cover plate is removed. This design doubles the life of the impeller and wearplate, and keeps the pump operating at maximum efficiency.

Solids Handling

Two-vane, semi-open solids handling impeller handles up to 3" (75 mm) diameter solids, depending on pump model. Pump out vanes on impeller shroud reduce foreign material buildup behind impeller and reduce pressure on seal and bearings.  Multi-vane impellers are available in "B" hydraulics models for higher head applications with limited solids. 

Exclusive Gorman-Rupp Cartridge Seal

Exclusive double-floating, self-aligning, oil lubricated mechanical cartridge seal with stationary and rotating face of silicon carbide or tungsten titanium carbide is specifically designed for abrasive and/or trash handling service.  Seal is available on 3", 4" and 6" (75 mm, 100 mm and 150 mm) pump models. Optional seals are also available. 

Removable Cover Plate with "Easy-Grip" Handle

The removable cover plate with "easy-grip" handle and pusher bolt capability provides quick and easy access to the pump interior without disconnecting piping. Clogs can be removed and the pump can be returned to service in minutes. Impeller, seal, wearplate and flap valve can also be accessed through coverlet opening for inspection or service.

Removable Rotating Assembly

Inspection of pump shaft or bearings is easily accomplished without disturbing pump casing or piping by removing rotating assembly. Simply remove four bolts from the back of the pump and the assembly slides out.  This allows for quick and easy installation of a spare rotating assembly, resulting in less downtime. 

Dual Protection of Bearings

An atmospheric barrier and two lip seals provide protection of the pump bearings.  This allows for quick and easy external monitoring of the bearing cavity. 

Replaceable Wearplate

Super T Series pumps feature replaceable wearplates which fasten to the cover plate and can easily be removed for inspection or service.  No expensive castings to replace.