STO Type Auto-Setter Industrial Sewage Pump

DESIGNED FOR SEWAGE APPLICATION AND MAINTENANCE SIMPLIFIED BY AUTOMATIC CONNECTING DEVICE
Power: 1 - 20 HP
Motor: 4 Poles

MAINTENANCE SIMPLIFIED BY AUTOMATIC CONNECTING DEVICE
The automatic connecting device performs connection/ disconnection between a pump and piping only by lifting the pump down / up along guide pipes, so the maintenance and inspection work can be done without entering the septic tank.

IMPELLER DESIGN

Design ADesign BDesign C 
Dual-blade semi-open type
non-clog impeller
Single-blade semi-open type
non-clog impeller
Dual-blade shrouded type
non-clog impeller

FEATURES  
EPOXY Cable Sealing Base
Waterproof cabtyre cable prevent water infiltration, cable ends sealed with epoxy resin, and lead wires are partially tripped off for perfect resin sealing. Triple protection for the motor against water penetration.
Built-in Motor Protector
Every FO/STO type are equipped with a self-reset circle thermal protector to prevent over-loading, locking of impeller, and scorch damage to the motor from phase failure.
SiC Mechanical Seal
Equipped with double mechanical seals and adopted with heat-and-corrosion-resistant silicon carbide mechanical seal for preventing the motor from water infiltration

APPLICATIONS

  • Influent pumping in combined treatment plants.
  • Influent pumping in industrial wastewater treatment plants.
  • Sewage treatment, human waste treatment.
  • Sewage wastewater and solid treatment in various factories and building sites.
  • Pumphouse in the sewer system.
TypePowerPhaseVoltagePolesDischarge
Dia.
Max
Head
Max
Flow
Solid
Passage
Impeller
Design
Cable
Size x L
Wt.HeightPump
Dia.
50 HzHPkWPHVPinchmmMm3/minmmDSGNmm2 x MkGmmmm
STO-11210.751200-2402250100.42Ф25B1.252 x 630486268
STO-13210.753220-4802250100.42Ф25B1.252 x 630486268
STO-21221.51200-2404380140.72Ф28A3.52 x 1056473518
STO-23221.53220-4804380140.72Ф28A3.52 x 1050372518
STO-33232.23220-4804380141.340x50B3.52 x 1097715580
STO-53253.73220-4804410017253x50B3.52 x 1097740580
STO-7327.55.53220-48044100232.388x46C5.52 x 10152797681
STO-1032107.53220-48044100262.388x46C5.52 x 10172818681
STO-153215113220-48046150224.5117x48C5.52 x 10253817880
STO-203220153220-48046150305117x50C8.02 x 10263901880
TypePowerPhaseVoltagePolesDischarge
Dia.
Max
Head
Max
Flow
Solid
Passage
Impeller
Design
Cable
Size x L
Wt.HeightPump
Dia.
60 HzHPkWPHVPinchmmMm3/minmmDSGNmm2 x MkGmmmm
STO-11210.751200-2402250100.45Ф25B1.252 x 630486268
STO-13210.753220-4802250100.45Ф25B1.252 x 630486268
STO-21221.51200-2404380140.72Ф28A3.52 x 1056473518
STO-23221.53220-4804380140.72Ф28A3.52 x 1050372518
STO-33232.23220-4804380141.440x50B3.52 x 1097715580
STO-53253.73220-48044100182.053x50B3.52 x 1097740580
STO-7327.55.53220-48044100242.488x46C5.52 x 10152797681
STO-1032107.53220-48044100302.688x46C5.52 x 10172818681
STO-153215113220-48046150244.8117x48C5.52 x 10253817880
STO-203220153220-48046150345.0117x50C8.02 x 10263901880

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