Pit Boss™ Dewatering Pumps for Tough Projects

This line of air-operated diaphragm pumps was developed especially for mining, construction, sump and other operations where a reliable, portable de-watering and solids-handling pump is an everyday requirement. These dewatering pumps were named the “Pit Boss” for its tough, uncompromising performance and construction.


  • Ideal answer to big volume applications - where performance is a mus.t
  • Reliability - Patented "unbalanced" air valve eliminates stalling and freezing.
  • Serviceability - Easy access to ball checks and fluid caps for easy maintenance and repair.
  • Versatility - Comfort grip handles allow maximum portability.
  • Solids-Handling - Capable of pumping semi-solids and solids up to 0.75" (19 mm).
  • Screened Inlet - Keeps unwanted debris out of the pump.
  • Intrinsically Safe - Pneumatic operation provides safe use in hazardous and explosive applications.
  • Power Suction Lift - Designed to evacuate liquids and solids out of critical areas without fail.
  • Typical Applications - mining, construction, and general industrial dewatering and solids handling applications.
  • Sizes -1 1/2"-2" and 3"
  • Pump Casing Materials

  • Aluminum
  • Center Body Material

  • Aluminum
  • Diaphragm Options

  • Hytrel -66M250-1C9-C
  • Nitrile
  • Santoprene 66M250-1EB-C
  • Accessories

  • 66312 Air line connection kit: contain piggyback filter/regulator with gauge, pipe nipple and a 5' section of hose
  • P29241-610 Filter/Regulator (included in 66312)
  • 637434 Air Section Service Kit (works for both Hytrel and Santoprene)
  • 637468-C9 Fluid Section Service Kit for Hytrel
  • 637468-EB Fluid Section Service Kit for Santoprene
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