USK Submersible Water Pump 1HP 4SDM313

USK Submersible Water Pump 1HP 4SDM313 Key Features and Performance:

• Submersible Design: The entire pump and motor unit operates fully immersed in water within the borehole. This provides:
  • Quiet Operation: Water dampens the motor noise.
  • Self-Priming: No need for manual priming, as the pump is always surrounded by water.
  • Efficiency: Pushes water upwards, which is generally more efficient for deep lifts.
• 1HP (Horsepower): This is the motor’s power output, equivalent to 0.75 kW. It’s a robust motor that delivers substantial power for deep well applications and higher pressure requirements.
• Voltage: Single-phase 220-240V AC (50Hz), compatible with standard household electrical systems in Kenya.
• Maximum Head (Vertical Lift): This is the standout feature of the 4SDM313. With 13 impellers, its maximum head is typically around 85 to 93 meters. This means it can effectively lift water from very deep boreholes or provide high pressure for large properties or elevated tanks.
• Rated Flow Rate: As indicated by the “3” in the model, the optimal flow rate is around 3 m3/h (50 liters per minute). The actual flow rate will depend on the operating head (the actual depth the pump is working at and the elevation to the delivery point). For instance, some specs show 10 L/min at 91m head, and 50 L/min at 66m head.
• Durable Construction:
  • External Casing: Often made of AISI 304 Stainless Steel for excellent corrosion resistance in submerged conditions.
  • Impellers/Diffusers: Typically made from robust engineering plastics like POM or PPO, or sometimes stainless steel, designed for durability and wear resistance even with very low sand content.
  • Motor: Hermetically sealed, oil-filled or water-filled for efficient cooling and lubrication.
  • Shaft: Usually AISI 304 Stainless Steel.
  • Built-in Check Valve: Often integrated to prevent backflow of water in the riser pipe.
  • Control Box: Comes with a separate control box containing the start capacitor and crucial thermal overload protection.
• Minimum Well Diameter: Requires a minimum borehole diameter of 4 inches (100mm).
• Maximum Immersion Depth: Can typically be immersed up to 80 meters.
• Maximum Sand Content: Designed for clean water or water with very low sand content (usually max 0.25% by weight). Higher sand content requires specialized sand-resistant pumps.