The Doyin 4SDM3/40 is the most powerful pump in the 4SDM3 single-phase series — a heavy-duty 4.0HP AC submersible borehole pump built for maximum lift from the deepest residential and commercial boreholes. With a maximum head of 287 metres and a steady output of 4,800 litres per hour, it tackles water tables that most single-phase pumps simply cannot reach, making it the ultimate choice for users who demand the deepest reach without stepping up to three-phase power.

Key Features & Benefits

• 287M maximum head — the deepest-reaching pump in the 4SDM3 single-phase range, handling Kenya’s most challenging borehole depths
• 4,800 L/h flow rate — delivers a strong, consistent water supply even from extreme depths underground
• 4.0HP single-phase motor — maximum power in the 4SDM3 series without requiring costly three-phase electrical infrastructure
• AISI 304 stainless steel pump body — fully corrosion-resistant housing engineered for long-term deep borehole submersion
• AISI 316 stainless steel shaft — premium-grade shaft for superior wear resistance and an extended operational life
• Standard 4-inch compatibility — fits all common borehole casings for straightforward installation
• IP X8 fully waterproof rating — completely sealed motor housing for safe, continuous operation at extreme depths
• Multistage pump design — stable pressure and consistent flow maintained from surface level down to 271 metres

Why Choose the Doyin 4SDM3/40?

• The top of the 4SDM3 range — maximum depth and power in a single-phase pump, no three-phase upgrade needed
• Ideal for Kenya’s deepest residential boreholes, especially in highland, rift valley, and arid region sites
• Stainless steel build quality throughout ensures greater longevity than lower-cost alternatives
• Engineered for estates, large farms, schools, hotels, and industrial projects that demand consistent bulk water supply Made-in-china
• Locally stocked in Kenya with reliable after-sales support and spare parts access

Applications

• Very Deep Residential Boreholes — The go-to pump for homes with boreholes exceeding 200 metres, ensuring reliable daily water supply
• Large Farms & Agricultural Operations — Powers high-demand irrigation systems drawing from the deepest water tables on expansive farmland
• Estates & Large Apartment Complexes — Delivers consistent, high-pressure water supply to large residential developments from deep underground sources
• Schools, Hospitals & Large Institutions — Guarantees uninterrupted bulk water supply for high-demand institutional facilities
• Hotels & Commercial Properties — Dependable deep-water sourcing for hospitality and commercial businesses with significant daily water requirements
• Arid & Semi-Arid Water Supply — Purpose-built for regions where water tables sit at extreme depths, ensuring access where other pumps fail