Standard and Explosion-proof

The Myers WG30-50 are rugged 3-5 horsepower submersible centrifugal grinder pumps designed for residential, light commercial, industrial or municipal applications.
They are especially designed for grinder pump applications requiring higher flows at low to moderate heads. The WG30-50 feature a heavy-duty cutter mechanism and recessed impeller design to efficiently grind typical sewage solids into a fine slurry.

WG30-50 grinder pumps are available in standard and U.L. Listed explosion-proof (WGX30-50) construction for use in Class 1, Group D hazardous locations.

WG30-50 grinder pumps can be installed in a variety of packaged systems. Factory-assembled simplex or duplex packages with guide rail systems are available. Individual rail components are also available for installation in on-site concrete systems. F E. Myers offers a complete line of submersible sump, sewage effluent, grinder, non-clog wastewater pumps, controls, basins and accessories.

Advantages by Design
Ideal for use in Lift Stations
  • Recessed impeller provides steep non-overloading operating curve.
Durable Motor will deliver many years of Reliable Service.
  • Oil-filled motor for maximum heat dissipation and constant bearing lubrication.
  • Recessed impeller reduces radial bearing loads increases bearing life.
  • High torque capacitor start/run single phase or three phase motors for assured starting under heavy load.
  • Seal leak probes and on-winding heat sensors warn of seal leak condition, and stop motor if motor overheats.
    Helps prevent costly motor damage.
The WG30-50 Series is designed for easy maintenance.
  • Shredding ring and grinder impeller are replaceable without dismantling pump or motor.
Unit of Measure



N/A 92 ft28.1 m

Liquids Handling

N/A Domestic Raw Sewage

Intermittent Liquid Temperature

N/A up to 140 ºFup to 60 ºC

Winding Insulation Temperature. (Class F)

N/A 311 ºF155 ºC
Motor Electrical Data1 N/A 1 ph, 230 volt 3 ph. 200/230/460 volt 3-5 hp, 3450 rpm 60 Hz

Acceptable pH Range

N/A 6 to 9

Specific Gravity

N/A 0.9 to 1.1


N/A 28 to 35 SSU

Discharge (Flange Dim.)

N/A 2 1/2 in63.5 mm

Minimum Sump Diameter (Simplex)

N/A 36 in91.4 cm

Minimum Sump Diameter (Duplex)

N/A 48 in121.9 cm


N/A 3 hp


N/A 230 V


N/A 3


N/A 60 Hz


N/A 78 A31.0 kV·A


N/A 17.8 A6.1 kW7.1 kV·A

NEC Code Letter


Service Factor

N/A 2.0


N/A 185 gpm693 lpm


N/A Consult factory for applications outside of these recommendations.

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

Cord Cap Material

N/A Cast Iron, Class 30, ASTM A48

Recessed Impeller Material

N/A Bronze

Power Cord Material

N/A 25 ft. SOOW

Control Cord Material

N/A 25 ft. SOOW

Standard Double Tandem Mechanical Seal Material

N/A Carbon & Ceramic

Optional Double Tandem Mechanical Seal Material

N/A Lower Tungsten Carbide

Pump Shaft Material

N/A 416 SST

Motor Shaft Material

N/A 416 SST

Fasteners Material

N/A 300 series SST

Shredding Ring Material

N/A 440 SST, 58-60 Rockwell

Grinder Impeller Material

N/A 440 SST, 58-60 Rockwell

Agency Approvals

Agency Approvals


  • 1 Single phase motors are capacitor start type. Myers control panels or capacitor kits are recommended for proper operation and warranty.