The Doyin 4SDM3/7 AC Submersible Borehole Pump is a compact 0.5HP / 370W deep-well pump designed for homes, small farms, irrigation, elevated tank filling and light commercial water supply.

It delivers up to 4.8m³/h (4,800 litres per hour) with a maximum head of 50 metres, making it a practical and energy-efficient option for shallow to medium-depth boreholes.

💧 Key Features

• ⚡ 370W / 0.5HP motor
• 📏 Maximum head: 50 metres
• 💧 Maximum flow: 4.8m³/h
• 🚰 Equivalent to 4,800L/hour
• 🔌 220–240V AC
• ⚙️ Single-phase operation
• 🔄 50Hz
• ⚡ Rated current: 3.7A
• 🕳️ Fits boreholes from 4 inches / 100mm
• 🧱 AISI 304 stainless-steel pump body
• 🔩 AISI 316 stainless-steel shaft
• ⚙️ Multistage pump design
• 🛡️ IPX8 waterproof protection
• 🌡️ Maximum water temperature of 35°C
• 🏖️ Maximum permitted sand content of 0.25%
• 🌾 Suitable for homes, farms and light irrigation

🕳️ Designed for Boreholes

The Doyin 4SDM3/7 is sized for standard 4-inch boreholes, making it suitable for residential and small agricultural water systems.

Typical uses include:

• 🏠 Domestic borehole water supply
• 🚰 Filling elevated tanks
• 🌾 Small-farm irrigation
• 🌱 Garden watering
• 🐄 Livestock water supply
• 🏫 Schools and small institutions
• 🏪 Light commercial applications

💦 4,800L/h Water Flow

The pump can deliver up to 4,800 litres per hour under suitable low-head conditions.

Actual output will reduce as pumping height increases, so the final installation should consider:

• Borehole static water level
• Pump installation depth
• Tank elevation
• Pipe length
• Pipe diameter
• Friction losses

🧱 Stainless-Steel Construction

The AISI 304 stainless-steel body provides corrosion resistance for borehole use, while the AISI 316 stainless-steel shaft offers additional durability around one of the pump's most important moving components.

✅ Benefits

• Low 370W power consumption
• Strong 50m lifting capability
• Up to 4,800L/h flow
• Fits standard 4-inch boreholes
• Single-phase operation
• Stainless-steel construction
• Multistage design
• IPX8 waterproof protection
• Suitable for homes and small farms

⚠️ Installation Notes

• 💧 Keep the pump fully submerged during operation
• 🚫 Never run the pump dry
• 🌍 Ensure proper earthing
• 🛡️ Use suitable motor protection
• 📏 Confirm total dynamic head before installation
• 🧹 Keep sand content within the stated 0.25% maximum
• 🌡️ Do not pump water above 35°C
• 🔧 Professional borehole installation is recommended