USK Submersible Water Pump 0.75HP -3SDM220

The USK Submersible Water Pump 0.75HP-3SDM220 is a powerful and specialized pump designed for deep wells and boreholes, particularly those with a narrower diameter (3 inches). The “3SDM” series indicates this 3-inch diameter and multi-stage design, while “220” refers to its specific performance characteristics.

Here’s a detailed breakdown of its features and typical specifications:

Key Features and Specifications:

• Power: 0.75 HP (horsepower) or 0.55 kW (kilowatts). This provides a significant increase in pumping capability compared to 0.5HP models, allowing for higher flow rates or greater pumping depths.
• Model Name Breakdown:
  • 3SDM: Signifies a 3-inch (diameter) submersible multi-stage pump. This is a crucial feature, as it means the pump can fit into boreholes with an internal diameter of 3 inches (approximately 75mm) or larger. This is ideal for wells where 4-inch pumps are too large. The multi-stage design uses multiple impellers stacked in series to build pressure and achieve high pumping heads.
  • 2/20 (or 220): The “2” typically refers to a flow rate series (e.g., around 2 m³/h or 33 L/min at optimal efficiency). The “20” indicates the number of impellers or stages within the pump. A higher number of stages directly translates to a much greater maximum head, allowing the pump to lift water from very deep sources.
• Submersible Design: The entire pump unit (motor and pump end) is designed to be fully submerged in the water source.
  • Silent Operation: The water acts as a natural sound insulator, making the pump virtually silent during operation.
  • No Priming Required: Since it’s submerged, it’s always “primed” and ready to pump, eliminating manual priming.
  • Efficient Motor Cooling: The surrounding water continuously cools the motor, preventing overheating, which is essential for long-term reliability in deep-well applications.
• Max Head (Maximum Delivery): This pump is designed for significant depths. For a 0.75HP 3SDM220, the maximum head is typically around 110 meters to 130 meters (approximately 360-426 feet). This high head capacity makes it suitable for extremely deep boreholes.
• Rated Flow Rate: The flow rate will vary inversely with the head. At its optimal efficiency point, it might deliver around 20-40 liters per minute (L/min), or 1.2 to 2.4 cubic meters per hour (m³/h). The exact flow at specific heads would be found on the pump’s performance curve.
• Minimum Well Diameter: Requires a minimum borehole/well internal diameter of 3 inches (75mm).