The SUNFLO-A is Dayliff's purpose-designed DC solar submersible pump for PV-powered water supply from wells and boreholes of 125 mm and larger. The rotary-screw (progressive cavity) hydraulic — a stainless-steel screw in a rubber stator — is driven by an oil-filled permanent-magnet brushless DC motor of 150, 270 or 600 W at 24, 36 or 48 V DC, with the controller built into the pump.

The IP68 unit runs at 2900 rpm to immersion depths of 30 m in ambients from −20 to +50 °C, powered directly from a solar array sized at roughly 130% of the rated motor power. Head/flow performance is published as curves in the datasheet — the 600 W model's curve reaches around 130 m of head at standard test conditions.