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Pentair Myers MS Submersible Zinc Sump Pumps

Versatile, long-life basement sump pump also appropriate for many light-duty dewatering jobs. Designed for drain water removal or permanent applications with small amounts of debris. Available in 1/3 or 1/2 HP and your choice of vertical or tethered float switch.

The MS33 and MS50 are Zinc/Cast Iron construction while the MS33P and MS50P are Zinc/Thermoplastic construction.

  • Maintenance-free operation
  • Wide-angle or vertical mechanical switch for small 10" diameter sumps
  • Dual ball-bearing motor and additional lip seal for durability and longer pump life
  • Durable PSC motor for years of service
  • Oil-filled PSC motor for maximum heat dissipation and continuous bearing lubrication
  • Thermal overload protection with automatic reset
  • Piggy-back style float for automatic or manual operation
  • CSA Listed

Specifications

VERTICAL FLOAT SWITCH SETTINGS: On: 7.5" (190.5 mm) / Off: 3" (76 mm)
TETHERED FLOAT SWITCH SETTINGS: On: 14" (356 mm) / Off: 5" (127 mm)
Intermittent Liquid Temp.: Up To 140°F (60°C)
MINIMUM SUMP DIAMETER: Tethered Switch: 14" (356mm) / Vertical Switch: 10" (254mm)
Housing Material:Zinc
Item #HPMAX CAPACITYMax HeadDISCHARGESOLIDS HANDLINGVoltageAmps (Max)PhaseCORD LENGTHSwitch
MS33V101/353251 1/2"1/4"1153.9110'PV
MS33V201/353251 1/2"1/4"1153.9120'PV
MS33D101/353251 1/2"1/4"1153.9110'PD
MS33T101/353251 1/2"1/4"1153.9110'PT
MS33T201/353251 1/2"1/4"1153.9120'PT
MS33M201/353251 1/2"1/4"1153.9120'M
MS50V101/266251 1/2"1/4"1154.1110'PV
MS50D101/266251 1/2"1/4"1154.1110'PD
MS50D201/266251 1/2"1/4"1154.1120'PD
MS50T101/266251 1/2"1/4"1154.1110'PT
Housing Material:Zinc
Item #HPMAX CAPACITYMax HeadDISCHARGESOLIDS HANDLINGVoltageAmps (Max)PhaseCORD LENGTHSwitch
MS33V101/353251 1/2"1/4"1153.9110'PV
MS33V201/353251 1/2"1/4"1153.9120'PV
MS33D101/353251 1/2"1/4"1153.9110'PD
MS33T101/353251 1/2"1/4"1153.9110'PT
MS33T201/353251 1/2"1/4"1153.9120'PT
MS33M201/353251 1/2"1/4"1153.9120'M
MS50V101/266251 1/2"1/4"1154.1110'PV
MS50D101/266251 1/2"1/4"1154.1110'PD
MS50D201/266251 1/2"1/4"1154.1120'PD
MS50T101/266251 1/2"1/4"1154.1110'PT
MS50T201/266251 1/2"1/4"1154.1120'PT
MS50M201/266251 1/2"1/4"1154.1120'M
IMPELLER MATERIAL:Semi-Open Reinforced Thermoplastic
Item #HPMAX CAPACITYMax HeadDISCHARGESOLIDS HANDLINGVoltageAmps (Max)PhaseCORD LENGTHSwitch
MS33V101/353251 1/2"1/4"1153.9110'PV
MS33V201/353251 1/2"1/4"1153.9120'PV
MS33D101/353251 1/2"1/4"1153.9110'PD
MS33T101/353251 1/2"1/4"1153.9110'PT
MS33T201/353251 1/2"1/4"1153.9120'PT
MS33M201/353251 1/2"1/4"1153.9120'M
MS50V101/266251 1/2"1/4"1154.1110'PV
MS50D101/266251 1/2"1/4"1154.1110'PD
MS50D201/266251 1/2"1/4"1154.1120'PD
MS50T101/266251 1/2"1/4"1154.1110'PT
MS50T201/266251 1/2"1/4"1154.1120'PT
MS50M201/266251 1/2"1/4"1154.1120'M
VOLUTE MATERIAL:Cast Iron
Item #HPMAX CAPACITYMax HeadDISCHARGESOLIDS HANDLINGVoltageAmps (Max)PhaseCORD LENGTHSwitch
MS33V101/353251 1/2"1/4"1153.9110'PV
MS33V201/353251 1/2"1/4"1153.9120'PV
MS33D101/353251 1/2"1/4"1153.9110'PD
MS33T101/353251 1/2"1/4"1153.9110'PT
MS33T201/353251 1/2"1/4"1153.9120'PT
MS33M201/353251 1/2"1/4"1153.9120'M
MS50V101/266251 1/2"1/4"1154.1110'PV
MS50D101/266251 1/2"1/4"1154.1110'PD
MS50D201/266251 1/2"1/4"1154.1120'PD
MS50T101/266251 1/2"1/4"1154.1110'PT
MS50T201/266251 1/2"1/4"1154.1120'PT
MS50M201/266251 1/2"1/4"1154.1120'M