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600 Series Sewage Pumps

600 Series Sewage Pumps

Commercial Use Sewage Pumps

Submersible sewage or dewatering non-clog pumps.

  • Model 611: 1 HP, Model 621: 1.5 HP, Model 631: 2 HP, Model 641: 3 HP, Model 651: 5 HP, Model 661: 7.5 HP
  • Class 30 cast iron construction
  • All units are double seal for extra motor protection
  • Corrosion-resistant, powder coated epoxy finish
  • Stainless steel screws, washers, tag and seal assembly
  • 1 Ph – capacitor start, capacitor run
  • Oil-filled, hermetically-sealed motor with heavy-duty, finned motor housing for added heat dissipation
  • Continuous duty operation in submerged conditions
  • Maximum temperature for sewage or dewatering: 104 °F (40 °C) with 1.2 service factor (1.0 service factor on model 661)
  • 416 stainless steel motor shaft
  • Stainless steel fitted tandem shaft seals, carbon/ceramic seal faces
  • Over-sized upper and lower ball bearings running in an oil bath
  • Buna N square rings and seals used throughout
  • All models pass 2-1/2” (63 mm) spherical solids
  • Specify 3” NPT vertical, 3” horizontal flanged or 4” horizontal flanged discharge
  • 100% computerized tested
  • Major width: 17-9/16″ (44.6 cm)
  • Major height: 29-1/4″ (74.3 cm)
  • Rail systems available for all models
  • Control panels with overload protection available
  • Non-automatic for variable level control systems
  • Double seal only
  • Patent No. 6,364,620
  • 1 year limited warranty


The sizing of effluent systems normally requires variable level float(s) controls and properly sized basins to achieve required pumping cycles or dosing timers with non-automatic pumps.

Reserve powered design.
For unusual conditions a reserve safety factor is engineered into the design of every Zoeller pump.

Motor 1 – 7.5 HP
Voltage 200 – 575 V
Phase 1 or 3 Ph
Hertz 60 Hz
RPM 1750 RPM
Type Capacitor start capacitor run or 3 phase
Insulation Class F
Amps 1.6 – 28.0 Amps
Operation Nonautomatic
Discharge Size 3″ NPT (optional 3″ or 4″ flange available)
Solids Handling 2-1/2″ (63 mm) spherical solids
Cord Length 25′ (8 m) standard
Cord Type UL listed 3-wire cord
Max Head 65′ (19.8 m)
Max Flow Rate 533 GPM (2018 LPM)
Max Operating Temperature 104 °F (40 °C)
Cooling Oil filled
Motor Protection Auto reset thermal overload (1 Ph)
Cap Cast iron
Motor Housing Cast iron
Pump Housing Cast iron
Base Cast iron
Upper Bearing Ball bearing
Lower Bearing Ball bearing
Mechanical Seals Tandem carbon and ceramic
Impeller Type Semi-open
Impeller Ductile iron
Hardware Stainless steel
Motor Shaft Stainless steel
Gasket Buna N O-Ring

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