Capacity : 95 gpm (360 lpm)
Head : 34 ft (10 m)

Simplex and Duplex Explosion-Proof Packages

Submersible Sump Pump/Control Panel

Myers SX50 and SX50H are rugged 1/2 hp Explosion-proof Submersible Sump Pumps designed for many commercial, municipal, or industrial applications. The SX50 and SX50H are U.L. and CSA listed with construction for use in Class 1, Division 1, Group D hazardous locations. These pumps are designed to pump contaminated water with a wide range of pollutants listed under the U.L., CSA listing. The pump package includes Myers intrinsically safe control panel.

Myers CEX control panels feature:
  • NEMA 4X enclosure with inner door
  • Separate pump and control circuit breaker
  • intrinsically safe module for floats
  • H-O-A switch
  • Run, seal leak, and alarm light
  • Motor starter and capacitor
  • U/L 913
  • Solids handling up to 2"
Applications Include
  • Service stations
  • "Quick-lube" stations
  • Car/truck washes
  • Truck docks
  • Military base
Pump/Control Panel Packages

SX50-21PS (high flow)
SX50H-21 PS (high pressure)

SX50-21PD (high flow)
SX50H-21PD (high pressure)

SX50-23PS (high flow)
SX50H-23PS (high pressure)

SX50-23PD (high flow)
SX50H-23PD (high pressure)
Unit of Measure



N/A 34 ft10 m

Solids Handling

N/A 2 in50 mm

Liquids Handling

N/A Domestic Effluent & Drain Water

Intermittent Liquid Temperature

N/A up to 140 ºFup to 60 ºC

Winding Insulation Temperature. (Class B)

N/A 266 ºF130 ºC
Motor Electrical Data1 N/A 1/2 hp, 1750 rpm
1Ø - capacitor start, 230 volt; 60 Hz
1/2 hp, 1750 rpm
3Ø - 200/230/460V; 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, NPT

N/A 2 in50 mm

Minimum Sump Diameter (Simplex)

N/A 24 in61 cm

Minimum Sump Diameter (Duplex)

N/A 36 in91.4 cm


N/A 1750 rpm


N/A 1/2 hp


N/A 230 V


N/A 3


N/A 60 Hz


N/A 10.8 A


N/A 3.2 A

NEC Code Letter


Service Factor

N/A 4 A1.25


N/A 95 gpm360 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 Cast Iron, Class 20, A48

Power Cord Material

N/A 15' 14/4 SOOW

Control Cord Material

N/A 15' 18/5 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

Agency Approvals

Agency Approvals2 N/A

  • 1 Single phase motors are capacitor start type. Myers control panels or capacitor kits are recommended for proper operation and warranty.
  • 2 CSA , UL Class 1, Div. 1, Group D