BW Submersible Pump 4ST 4/8 - 0.55 kW, 5/4"

Product detailed description

Multi-stage submersible pump 4ST 4/8 with a power of 0.55 kW, suitable flow rate of 4.2 m³/h (70l/min) and 230 V power supply.

The hydraulic part of the pump is made of a stainless steel casing, stainless steel suction and discharge parts, nine floating impellers made of noryl with performance curve tolerance within ISO9906 range.

The pump is standardly supplied with a 20-metre suspension cable and an original 4PM rewindable oil-filled motor equipped with an external capacitor box.

Use of the submersible pump:

• for pumping drinking and utility water from wells and tanks,
• irrigation, water supply for households and public facilities,
• for fire protection systems, pressure boosting,
• garden watering, field irrigation.

TECHNICAL PARAMETERS OF THE PUMP

• Max. temperature of pumped water - 35 °C
• Max. sand content in water - 0.25%
• Min. internal well diameter - 100 mm
• Pump length - 769 mm
• Pump diameter - 96 mm
• Power - 0.55 kW
• Voltage - 230 V
• Max. flow rate - 6 m³/h
• Optimal flow rate - 4.2 m³/h | 70 l/min
• Optimal delivery head - 44 m
• Max. delivery head - 60 m
• Discharge thread diameter - 5/4"
• Cable length - 20 m

Performance and efficiency curve of the pump 4ST 4/8

Purpose and function of the pump

Pumps act as devices that supply kinetic energy to the fluid flowing through them. Water is drawn into the tank by vacuum and subsequently pushed out of the tank by pressure. Electrical energy, which drives the motor, is most commonly used to power the pump.