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4SRM 3/7, 0.5HP

A 12V brushed DC motor with a metal cylindrical housing and two-wire DC input, designed for continuous operation. It provides high starting torque, reversible rotation by polarity change, and speed control via voltage or PWM. Suitable for general-purpose mechanical and industrial applications requiring reliable DC drive performance.

Category:
 Materials & Build

Pump body & motor bracket — stainless steel (AISI 304) for corrosion resistance.
Impellers & diffusers — Technopolymer for lightweight strength.
Shaft & bushes — stainless steel AISI 304 for wear resistance.
Seals & filters — stainless steel components to protect internals.
Motor — submersible, oil-filled or encapsulated electric motor designed to work fully submerged.

Installation Considerations

Fully submerge and suspend vertically in the borehole using a strong rope or rod.

Use proper submersible cable and grounding with a dedicated electrical supply.

Install rigid discharge pipe with check valve and avoid dry running.

Ensure clean water with minimal sand and maintain access for maintenance.

 Summary
  • Type: 4″ borehole submersible pump.
  • Power: ~0.5 HP (0.37 kW).
  • Hertz:
  • Current: ~4.0 A
  • Capacitor: 30 µF
  • Flow/Head: Up to ~4.7 m³/h (4700 litres/hour) and ~35m head (100 -125 ft).
  • Use: Water extraction & supply from wells, irrigation, pressure boosting.
  • Materials: Stainless steel, technopolymer parts.
  • Protection: IP68 submersible.
Applications
  • Domestic water supply from boreholes and deep wells
  • House water tanks filling (ground tank to overhead tank)
  • Small-scale irrigation (gardens, lawns, drip systems)
  • Farm water supply for livestock and washing
  • Pressure boosting systems with pressure tanks/autoclaves
  • Residential buildings (homes, villas, small apartments)
  • Commercial use (light duty) like shops, schools, mosques
  • Rainwater or clean underground water pumping
Not suitable for
  • Muddy or slurry water
  • Sewage or wastewater
  • High sand content beyond limit

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