Product Description

The Dayliff DSD 3/7 is a multistage centrifugal submersible borehole pump designed for domestic and small‑scale clean water supply from wells, boreholes or deep sumps. It is part of the Dayliff DSD 3 series of submersible pumps that combine a stainless‑steel sealed liquid‑cooled motor with durable pump components constructed from high‑grade materials for long service life. This model is supplied complete with a 30 metre power cable and a dedicated control box that includes electrical overload protection and start/stop controls to simplify installation and safeguard the pump. The pump’s compact vertical design supports installation in standard boreholes with minimal footprint.

Key Benefits and Features

• The multistage centrifugal design delivers reliable head and flow performance suitable for domestic water supply, irrigation or livestock watering.
• Constructed with polycarbonate impellers and diffusers, cast iron delivery and suction chambers, and AISI 304 stainless‑steel housing, shaft and coupling for corrosion resistance and durability.
• Sealed liquid‑cooled 2‑pole asynchronous squirrel‑cage motor delivers stable performance with IP68 submersible protection and B‑class insulation.
• Supplied with a purpose‑designed control box that provides thermal overload protection and a safe means of electrical connection for the single‑phase motor.
• Includes a 30 metre submersible cable for deep installation without the need to source additional wiring.
• Suitable for clean water with some fine sand content (up to ~0.25 %) without aggressive chemicals, making it ideal for borehole extraction.

Essential Specifications

• Model name: Dayliff DSD 3/7 submersible borehole pump complete with control box and 30 m cable.
• Pump type: Multistage centrifugal submersible borehole pump.
• Motor power: 0.37 kW (~0.5 HP).
• Voltage: Single‑phase 240 V AC; speed ~2850 rpm.
• Current: ~3.7 A; starting current ~6.0× rated.
• Outlet connection: 1¼″ BSP.
• Maximum immersion depth: up to ~150 m in clean water.
• Maximum fluid temperature: +35 °C.
• Minimum borehole diameter: ~110 mm.
• Enclosure class: IP68 for submersible operation.
• Insulation class: B.
• Cable length: 30 m.
• Materials: AISI 304 stainless‑steel housing, shaft and coupling; polycarbonate impellers and diffusers; cast iron chambers.
• Typical uses: domestic borehole or well water supply, irrigation support and clean water extraction tasks.