Self Primer

Self Primer

The WSP self-primer pump is a rugged and dependable self priming, solids handling, trash pump. Distinguishable from our competitors, the WSP self-primer pump design allows for a
shim-less, tool-less impeller adjustment and ease of suction flap valve replacement. The Buzzsaw™ wear plate is a standard feature on WSP self primer pumps. With an aggressive saw tooth shaped profile, its shearing of stringy materials as they pass through the pump prevents clogs before they can form.

The Buzzsaw wear plate helps prevent the WSP self-primer pump from running in a state of partial clog and allows the pump to run at higher overall efficiencies while lowering maintenance costs,
extending valuable runtime. The Buzzsaw wear plate is not available in high-head models.

Equal in importance to maintenance is safety. The WSP self-primer pump is designed with the added benefit of the fill port cover and clamp bar assembly. The recessed bolt locking construction and anti-rotation design of the clamp bar assembly prevents accidental breach of the fill port cover, protecting the operator from scalding burns.

Key features/benefits

  • 17-4PH Stainless steel shaft
  • Carbon steel Impeller
  • Shim-less impeller adjustment
  • Ductile Iron casing
  • Solid silicon carbide seal faces
  • Tool-less impeller adjustment
  • Flanged suction and discharge
  • Advanced safety features
  • Two-piece bearing housing
  • Buzzsaw wear plate (not available in high-head model


  • Municipal and industrial waste water
  • Automotive
  • Metal machining
  • Beef/pork/poultry processing
  • Production/manufacturing
  • Pulp and paper
  • Dewatering
  • Tanker truck unloading
  • Mining and minerals
  • Drilling mud recovery
  • Winery
  • Food and beverage


  • Water and waste water
  • Food and beverage processing
  • High pressure pumping (Industrial)