USK 3SDM227 Submersible Water Pump 1HP

The USK 3SDM227 Submersible Water Pump 1HP is a very powerful and specialized submersible pump designed for extremely deep and narrow boreholes. The combination of 1HP power and a very high number of impellers (27 stages) in a 3-inch diameter makes it a niche but highly effective solution for challenging water extraction scenarios.

Key Specifications and What They Mean:

• USK 3SDM227:

  • “3”: This is the defining characteristic. It indicates the diameter of the pump in inches, meaning it’s specifically designed for narrow boreholes or wells with a minimum casing diameter of 3 inches (approximately 75mm or 80mm). This is crucial for wells that cannot accommodate the more common 4-inch pumps.
  • “SDM”: Denotes a Submersible Deep Well Multi-stage pump. The multi-stage design, with a large number of impellers, is fundamental to its ability to generate extremely high head (pressure) for lifting water from vast depths.
  • “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.
  • “27”: This is highly significant. It typically signifies the number of impellers (27 stages) within the pump. This exceptionally high number of impellers allows the pump to achieve remarkable heads, making it suitable for the deepest wells.

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

  • Key Advantages:
    • No priming required: Operates directly within the water.
    • Quiet operation: Water muffles motor noise.
    • Extremely efficient for very deep lifts: Pushes water up rather than pulling, which is more energy-efficient for extreme heads.
    • Less prone to cavitation: Water pressure helps prevent air pockets.
    • Overcomes suction lift limitations: Can pump from depths far beyond what surface pumps can manage.

• 1HP (Horsepower): This indicates the motor’s power output.

  • In Watts/Kilowatts: 1 HP is equivalent to approximately 750 Watts (0.75 KW). This power, combined with the incredibly high number of impellers (27 stages), makes this pump capable of reaching truly impressive depths.

Typical Performance Specifications (based on common 3SDM227 1HP pumps):

• Maximum Head (Height): This is the paramount feature. For a 1HP 3SDM227 with 27 impellers, the maximum head will be exceptionally high, often ranging from 130 to 170 meters. Some high-performance 1HP 3-inch pumps from other brands can even push towards 150 meters. This makes it suitable for some of the deepest boreholes encountered.
• Maximum Flow Rate: Given its design for extreme head in a narrow casing, the flow rate at its maximum head will be relatively low. Expect a flow rate typically around 1.5 to 3.0 cubic meters per hour (m³/h), or roughly 25 to 50 liters per minute (L/min). The pump prioritizes depth over sheer volume.