The engineered plastic 12 volt submersible centrifugal Tempest/Twister® pump is capable of pumping up to 18m from ground level, and the Super Twister® up to 25m (Depth to Water) by simply connecting to a 12 volt deep cycle battery. They are well suited for continuous sampling and purging of groundwater wells, or Low Flow Sampling by adding the optional controller.

They can also be mounted on a hose reel as indicated by the images.