Zoeller M53 Submersible Sump Pump Cast Iron Vertical Float 3/10 HP 1 1/2 in Discharge


  • $169.11
    Unit price per 

Professional-grade, 3/10 HP submersible pump for residential dewatering (sump) or effluent (septic tank systems) use. Considered one of Americas' most popular sump pumps. This robust family of sump pumps is known for reliability, durability and performance. Available with an intergral, 2-pole, snap action float switch. The heat-dissipating cast iron body with powder coated epoxy finish provides maximum pumping performance under the most extreme conditions. With Zoellers' cool run design, the hermetically sealed, oil-filled motor and non-clogging vortex impeller add up to a long-lasting, trouble-free product.


  • Float-operated, submersible, 2-pole mechanical switch and variable level, long-cycle systems available
  • Corrosion-resistant, powder-coated epoxy finish
  • No sheet metal parts to rust or corrode
  • Stainless steel screws, switch arm, guard, and handle
  • No screens to clog
  • Watertight, neoprene square ring between motor and pump housing
  • Solid, buoyant, polypropylene float
  • Oil-filled, hermetically-sealed, automatic reset thermal overload protected motor
  • Upper and lower sleeve bearings running in bath of oil
  • Entire unit pressure-tested after assembly
  • Carbon and ceramic shaft seal
  • Maximum temperature for effluent or dewatering: 130F (54C)
  • Passes 1/2 (13 mm) spherical solids
  • 1-1/2 NPT discharge
  • On point: 7-1/4 (18 cm)
  • Off point: 3 (8 cm)
  • Major width: 10-3/32 (26.2 cm)
  • Major height: 10-1/16 (25.6 cm)
  • Watertight and dust-tight
  • 3 year limited warranty on Models 53
  • Cast iron switch case, motor and pump housing
  • Engineered thermoplastic base
  • Engineered, glass-filled, plastic impeller with metal insert
  • Stainless steel guard and handle
  • Cast iron sleeve bearings

Spec Sheet

Dimensional Drawings

Installation Guide

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