USK 3SDM220 Submersible Water Pump 0.75HP

The USK 3SDM220 Submersible Water Pump 0.75HP is another specialized submersible pump designed for narrow boreholes, but with increased power and, critically, a higher number of impellers than the 3SDM214. This combination allows it to deliver water from even greater depths.

Key Specifications and What They Mean:

• USK 3SDM220:

  • “3”: Indicates the diameter of the pump in inches, designed specifically for narrow boreholes or wells with a minimum casing diameter of 3 inches (approximately 75mm or 80mm). This is its defining characteristic, making it suitable where 4-inch pumps cannot fit.
  • “SDM”: Denotes a Submersible Deep Well Multi-stage pump. The multi-stage design, with numerous impellers, is essential for generating the high head (pressure) required to lift water from very deep sources.
  • “2”: Often relates to a nominal flow rate, potentially 2 cubic meters per hour (2m³/h) or around 33 liters per minute, at a specific head.
  • “20”: This is very significant. It typically signifies the number of impellers (20 stages) within the pump. This extremely high number of impellers allows the pump to achieve exceptional heads, making it ideal for the deepest wells relative to its horsepower.

• Submersible Water Pump: The entire pump and motor unit is designed to be fully immersed in the water within the well or borehole during operation.

  • Key Advantages: No priming needed, very quiet operation (as it’s submerged), highly efficient for deep lifts (pushes water up), less prone to cavitation, and overcomes suction lift limitations.

• 0.75HP (Horsepower): This indicates the motor’s power output.

  • In Watts/Kilowatts: 0.75 HP is equivalent to approximately 550 Watts (0.55 KW). Despite being less than 1HP, the 20-stage impeller design allows this pump to achieve remarkable depths.