USK Submersible Water Pump 1HP 4SDM313

The “USK Submersible Water Pump 1HP 4SDM313” is a high-performance deep well submersible pump, and the “4SDM313” is a very specific model designation that tells us a lot about its design and capabilities.

Here’s a detailed look at this pump:

Key Features and Specifications (USK 1HP 4SDM313 Submersible Water Pump):

• Pump Type: Submersible Borehole Pump. This means it’s designed to be fully immersed in a well or borehole to push water upwards, overcoming the limitations of surface pumps.
• Horsepower (HP): 1 HP (0.75 kW).
• Model Series: 4SDM313
  • “4” indicates it’s a 4-inch pump, suitable for boreholes with a minimum casing diameter of 4 inches (100mm) or larger.
  • “SDM” typically refers to a multi-stage deep well submersible pump.
  • “3/13” (as seen in some similar models like Sterling 4SD3/13) often means 3 impellers/stages, with 13 being a specific design or performance variant. The “313” likely follows a similar logic for USK.
• Performance (Crucially depends on the specific variant, but common ranges for 4SDM313 1HP are):
  • Maximum Head (Vertical Lift): This is the most critical spec for submersible pumps. For the USK 4SDM313 1HP, common listings show a maximum head of 85 meters. There’s also mention of a 93-meter variant for a 4SDM3/13 from another brand, so it indicates the capability.
  • Flow Rate: Flow rates vary significantly with the head. For the 85-meter head model, expect flow rates around 20 L/min at higher heads (e.g., 88m) to 69 L/min at lower heads. (This translates to roughly 1.2 m³/h to 4.14 m³/h).
• Construction:
  • Stainless Steel Construction: A key feature, often specified as AISI 304 Stainless Steel for the pump’s external casing, shaft, and sometimes other components. This provides excellent corrosion resistance and durability for submerged operation.
  • Impellers: Designed for deep wells, often “sand-crushing” impellers (made of engineering plastic like POM/PPO or stainless steel) that can handle some sand content (e.g., up to 0.25% sand).
  • Motor Windings: Typically 100% copper coil windings for optimal electrical efficiency and motor longevity.
  • Mechanical Seal: Specialized seals for deep well applications (e.g., Graphite-Ceramic).
• Voltage: Single-phase 220V-240V AC (50Hz), suitable for standard household power in Kenya.
• Control Box: Includes an external control box for starting, motor protection, and capacitor.
• Cable: Comes with a pre-attached electrical cable, typically sized for the maximum head depth (e.g., 80m or more cable length).
• Outlet Size: Usually 1-inch or 1.25-inch outlet diameter.
• Protection Class: IP68 (dust and water protection) for safe continuous immersion.