USK Submersible Water Pump 0.75HP 4SDM310

USK Submersible Water Pump 0.75HP 4SDM310 Key Features and Performance:

• Submersible: The entire unit (motor and pump) is designed to be fully immersed in the water within the borehole. This ensures quiet operation, eliminates priming issues, and is generally more efficient for deep water extraction.
• 0.75HP (Horsepower): This is the motor’s power output, equivalent to approximately 0.55 kW. This provides a good balance of power for increased depth and flow compared to the 0.5HP models.
• Voltage: Single-phase 220V/230V AC (50Hz), suitable for standard household electrical connections in Kenya.
• Maximum Head (Vertical Lift): A significant advantage of the 4SDM310. With 10 impellers, its maximum head is typically around 56 to 62 meters. This makes it suitable for lifting water from deeper boreholes or wells than the 0.5HP models, and providing higher pressure at the surface.
• Rated Flow Rate: The “3” in the model number suggests a nominal flow rate around 3 m³/h (3000 liters per hour or 50 liters per minute) at its optimal operating head. However, some listings indicate a range from 20 L/min to 69 L/min depending on the head.
• Construction:
  • Body: Usually high-grade stainless steel (e.g., AISI 304) for excellent corrosion resistance in submerged conditions.
  • Impellers/Diffusers: Commonly made from durable, high-strength thermoplastic (like Noryl or POM) or stainless steel, designed to be wear-resistant, even with minor sand content.
  • Motor: Hermetically sealed, oil-filled or water-filled for efficient cooling and lubrication.
  • 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 for the motor.
• Minimum Well Diameter: Requires a minimum borehole diameter of 4 inches (100mm).
• Cable Length: Typically supplied with a standard length of submersible cable (e.g., 30-50 meters), which can be extended by a qualified electrician.
• Sand Content: Designed for clean water or water with very low sand content (usually max 0.25% by weight). High sand content requires specific sand-resistant pumps.

Common Applications:

• Household Water Supply: Ideal for supplying water to medium-sized to larger households from boreholes or deep wells, providing good pressure for multiple outlets.
• Small to Medium-Scale Irrigation: Suitable for watering gardens, small farms, or greenhouses where the higher head is beneficial.
• Filling Overhead Tanks: Efficiently lifts water to high-level storage tanks.
• Groundwater Pumping: General extraction of water from underground aquifers.