Doyin 4SD3/30 (3.0HP) 3-Phase AC Submersible Borehole Pump

The Doyin 4SD3/30 3-Phase is a robust 3.0HP three-phase AC submersible borehole pump built for commercial and institutional water supply from medium-to-deep boreholes. Reaching a maximum head of 215 metres with a steady 4,800 litres per hour output, it is purpose-built for sites with three-phase power infrastructure — delivering greater motor efficiency, smoother operation, and longer service life compared to single-phase equivalents at the same power rating.

Key Features & Benefits

• 215M maximum head — handles deep boreholes with consistent, reliable pressure across commercial and institutional sites
• 4,800 L/h flow rate — steady, high-volume water delivery for demanding daily water supply requirements
• Three-phase motor efficiency — smoother power delivery, reduced motor heat, and lower current draw compared to single-phase operation at equivalent power
• AISI 304 stainless steel pump body — fully corrosion-resistant construction for reliable long-term borehole submersion
• AISI 316 stainless steel shaft — premium-grade shaft material for maximum wear resistance and extended pump service 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 deep-water operation
• Multistage pump design — maintains stable pressure and consistent flow even at significant depths

Why Choose the Doyin 4SD3/30 3-Phase?

• The three-phase advantage — more efficient, cooler running, and longer-lasting than a single-phase pump at the same power class
• Ideal for commercial and institutional sites already equipped with three-phase power supply
• Lower operating current means reduced wear on electrical infrastructure and switchgear
• Part of Doyin’s globally proven 4SD3 series — trusted engineering backed by 30+ years of experience and 95+ patents
• Locally stocked in Kenya with dependable after-sales support and spare parts availability

Applications

• Commercial & Institutional Boreholes — Reliable deep-water supply for schools, hospitals, hotels, and office complexes with three-phase power
• Large Farms & Agricultural Projects — Powers consistent irrigation from deep boreholes across large commercial farming operations
• Estates & Apartment Developments — Ensures uninterrupted, high-pressure water supply to large residential complexes
• Factories & Industrial Facilities — Meets bulk water demands for manufacturing and processing operations with three-phase electrical infrastructure
• Large Tank & Reservoir Filling — Efficiently fills elevated tanks, ground cisterns, and large water storage systems
• Arid & Semi-Arid Water Projects — Suitable for deep boreholes in water-scarce regions where reliable supply is critical