Pit Boss™ 2″ Dewatering and Solids-Handling Pump

ARO 66M250-1EB-C

156 GPM (590.5 LPM)

Operators Manual

Sales and Engineering Data sheet


  • 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.
  • 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


  • 66312 Air line connection kit: contain piggyback filter/regulator with gauge, pipe nipple and a 5′ section of hose
  • P39354-614 Filter/Regulator
  • 637434 Air Section Service Kit
  • 637468-EB Fluid Section Service Kit

      General Description:

      • Motor: Aluminum
      • Inlet/ Outlet: 2” NPT Manifold
      • Screened Inlet
      • Fluid Caps & Manifold Material: Aluminum
      • Seat Material: Aluminum
      • Ball Material: Santoprene
      • Diaphragm Material: Santoprene
      • ATEX certified 

      Have questions or need help?  Call 419-633-0560

      Teflon, Viton and Hytrel are registered trademarks of the DuPont Company – Kynar is a registered trademark of Arkema Inc. –  Fluoraz is a registered trademark of Greene, Tweed & Co. Inc. –  Santoprene is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. S


      Additional information

      Weight1186.4044372584 oz
      SKU: SKU-1012 Category: Tag: