Lorentz Solar Submersible Pumps

Lorentz solar submersible pumps are designed in Germany to give reliable water from boreholes, wells, rivers and streams, with no mains power needed. They are used for livestock watering, irrigation, farm and estate supplies and water transfer. Most systems run straight from the solar panels with no battery, which keeps things simple, but the Lorentz controllers can also run from batteries if you need water outside daylight hours. A submersible pump sits down in the water, so it never needs priming and copes with debris better than a surface pump. Its self-cooling, self-lubricating design also makes it less likely to freeze. The PS2 range is built to be very efficient, which keeps the solar array as small as it can be. You can buy just the pump and controller, or a complete solar pumping system with the array, mounting and specialist accessories. We are authorised Lorentz sales and service partners, and we supply the PS2 and PSk3 ranges in the UK.

Which Lorentz solar pump do I need?

The five PS2 ranges are named after the size of the controller. Within each range you choose a pump end to suit the depth of your borehole and the volume of water you need each day. The smaller ranges suit modest supplies from shallow water, and the larger ones lift more water, or lift from much deeper. For bigger duties there are two PSk3 systems with higher power controllers, which can also mix in grid or generator power. The PSk3-7 suits deep lifts of up to 240 m and boreholes from 4 inches, and the PSk3-15 is for high flows of up to 235 m³/h.

The head and flow figures show the lowest and highest maximums across the pump ends in each range, from the current Lorentz datasheets. You can't have maximum head and maximum flow together, because the flow falls as the lift goes up, so the right pump end depends on your site. Prices are the lowest for each range and depend on the pump end, and all of our Lorentz pumps are enquiry only.

Free solar pump sizing with Lorentz software

We size every system for free with Lorentz's own selection software. We need your borehole depth and internal diameter, the water level, the height the water must be lifted to and how far it travels, and the volume of water you need each day. The result is an estimate based on those details, not a guarantee of output. We supply the equipment, and you or your installer carry out the installation.

Send your site details through the solar pump enquiry form, or read our guide to solar borehole and well pumps first.