Capacity : 330 gpm (20.82 lps)
Head : 92 ft (28 m)

Vertical Discharge
2" Solids Handling - 3450 RPM
2 1/2" Solids Handling -1750 RPM

The heavy-duty Myers 3MW series sewage pumps are designed for use in residential raw sewage and light commercial applications. 3MW pumps are available in single and double seal configuration. The enclosed two-vane impeller provides high efficiency pumping and easily handles trashy solids normally found in sewage applications. This series is offered with vertical discharge and easily adapts to a quick-disconnect slide rail system.

Advantages By Design
  • High efficiency hydraulic design cuts pumping costs and extends life of fluid end components.
  • Two-vaned rounded port impellers easily handle solids at high operating efficiencies.
  • Offered in two speeds to cover larger operating range.
  • Hydraulic end virtually maintenance free. No close running tolerances have to be maintained or adjusted.
  • Volute seal ring replaces in minutes if wear should occur with no adjustments needed.
Durable motor will deliver many years of reliable service
  • Oil-filled motor for maximum heat dissipation and constant bearing lubrication.
  • High torque, permanent split capacitor (PSC), single phase motors. No starting switches or relays to wear out.
  • Optional seal leak probe warns of seal leak condition. (Dual seal motors only.) Helps prevent costly motor damage.
  • Motors have on winding current and temperature sensitive overload. (Single phase only.)
  • Motor is held in place by 4 bolts. Easily removed if service is ever needed.
Unit of Measure



N/A 92 ft28 m

Solids Handling at 1750 rpm

N/A 2 1/2 in63.5 mm

Solids Handling at 3450 rpm

N/A 2 in50.6 mm

Liquids Handling

N/A Effluent Rain Water Raw Sewage

Intermittent Liquid Temperature

N/A 140 ºF60 ºC

Winding Insulation Temperature. (Class B)

N/A 266 ºF130 ºC

Motor Electrical Data

N/A 1750 rpm (1 1/2-3 HP) 200/230/460/575 volt, 3Ø, 60 Hz 208/230 volt 1Ø, 60 Hz 3450 rpm (1-3 HP)

Acceptable pH Range

N/A 6 to 9

Specific Gravity

N/A 0.9 to 1.1


N/A 28 to 35 SSU

Discharge Vertical

N/A 3" NPT

Minimum Sump Diameter (Duplex)

N/A 48 in1.2 m


N/A 1.5 hp


N/A 200 V


N/A 3


N/A 60 Hz


N/A 36.8 A12.7 kV·A


N/A 9.8 A1.7 kW3.4 kV·A

NEC Code Letter


Service Factor

N/A 9.8 A1.7 kW1.0


N/A 330 gpm20.82 lps

Construction Material

Motor Housing Material

N/A Cast Iron, Class 30, ASTM A48

Seal Housing Material

N/A Cast Iron, Class 30, ASTM A48

Volute Case Material

N/A Cast Iron, Class 30, ASTM A48

Enclosed 2-Vane Impeller Material

N/A Ductile Iron, Class 65, ASTM A536

Power Cord Material


Control Cord Material

N/A 25 ft.SOOW

Standard Double Tandem Mechanical Seal Material

N/A Carbon & Ceramic, Single, Type 21

Optional Double Tandem Mechanical Seal Material

N/A Single, Type 21, Tungsten Carbide

Pump Shaft Material

N/A 416 SST

Motor Shaft Material

N/A 416 SST

Fasteners Material

N/A 300 series SST

Agency Approvals

Agency Approvals1 N/A

  • 1 UL Pending