Comet P40GR (Poly) “Soft Wash” Diaphragm Pump


SKU: CometP40 Category:



The latest in innovation for the soft wash industry is here! Comet has designed a higher flow version of their poly series pumps – say hello to the P40GR. Enjoy flow rates up to 11 gpm and pressures up to 300 psi and a longer pump life due to upgraded chemical resistant components.

Manufacturer Description:

The Comet P40GR comes complete with pressure regulator and gearbox for mounting on 5 to 6.5 hp gas engines. With polypropylene manifolds and stainless steel parts this pump can handle even the most corrosive chemicals.

  • Chemical Resistant Wet Parts Compatible with Aggressive Soft Wash Chemicals
  • Single Piece Manifold For Reduced Leak Points & Quick Service
  • Increased Flow and Pressure (11 GPM @ 300 PSI)
  • Molded Inserts That Cannot Come Loose
  • Bolt-On Regulator To Prevent Leaks When Adjusting Pressure Knob
  • Aluminum Head Plates To Prevent Flexing of the Heads
  • Metal Oil Cup For Impact Resistance
  • Ideal Application:  Professional Soft Washing (Mold, Bacteria, Mildew, Moss, Fungus, Algae)


  • Max flow: 11 gpm
  • Max pressure: 300 psi
  • Max rpm: 550
  • Horsepower required: 3.0
  • Includes pressure regulator and gearbox with 3/4″ hollow shaft for mounting on 5 to 6.5 hp gas engines
  • Port sizes: 1″ HB inlet, 3/4″ outlet, 1/2″ HB bypass
  • Pump shaft rotation: CW and CCW
  • Max fluid temperature: 140°F
  • Weight: 31 lbs


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