Capacity : 315 gpm (19.9 lps)
Head : 100 ft (30.4 m)

Standard (3RH) and Explosion-Proof (3RHX) Construction

Myers 3RH and 3RHX (explosion-proof) submersible wastewater pumps are the right choice when difficult to pump fibrous or stringy solids are to be expected.The 3RH/3RHX series provides smooth, vibration-free operation when operating at heads higher than peek efficiency. For use in commercial lift stations, treatment plants and industrial waste applications. Myers offers a complete line of wastewater pumps, lift-out rail assemblies, controls and accessories to meet your needs.

Advantages By Design
Passes Stringy Trash, Fibrous Wastes, Slurries, and other difficult to pump Solids that standard enclosed or semi-open Impellers can not.
  • Recessed impeller design has completely open passage in volute.
  • Pumping action is by Vortex; solids can not get caught in impeller volute.
  • Operates without vibration or cavitation over entire performance curve. Operates near shut-off without harming pump.
Durable motor will deliver many years of reliable service.
  • Recessed impeller greatly increases bearing life by reducing radial load.
  • Oil-filled motor for maximum heat dissipation and constant bearing lubrication.
  • Heat sensor thermostats imbedded in windings protect motor from overheat conditions.
  • Seal leak probes warn of moisture entry; helps prevent costly motor burnout.
Available with optional F.M. approval for use in class 1, Groups C and D hazardous locations (3RHX only)
Unit of Measure



N/A 100 ft30.4 m

Liquids Handling

N/A Effluent Fibrous Wastewater Raw Unscreened Sewage Storm Water

Solids Handling (Diameter)

N/A 2 in50.8 mm

Intermittent Liquid Temperature

N/A up to 140 ºFup to 60 ºC

Winding Insulation Temperature. (Class F)

N/A 311 ºF155 ºC

Motor Electrical Data

N/A 3450 RPM 3-5 HP 230V 1Ø, 60 Hz 3-7 1/2 HP 200/230/460/575V, 3Ø, 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

Horizontal Discharge Flanged Centerline

N/A 125 lb. ANSI 3 in 76 mm


N/A 5 hp


N/A 200 V


N/A 3


N/A 60 Hz


N/A 82 A28.4 kV·A


N/A 17.0 A5.2 kW4.0 kV·A

NEC Code Letter


Service Factor

N/A 19.1 A5.9 kW1.2


N/A 315 gpm19.9 lps


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 Ductile Iron, Class 65, ASTM A536

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, Type 21

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

Agency Approvals

Agency Approvals