D-D Funktion 2000 DC Pump The D-D Funktion pumps are a multi-function DC pump with a unique digital controller, featuring three wave modes and a constant running setting. These pumps are suitable as a return pump, for running media reactors or as a closed loop pump (5000/6500/10000 models only). Suitable for salt or freshwater use, the sine wave technology and low voltage motor offers ultra-low running noise, low heat output and energy efficiency. Full range of high flow pumps with a compact footprint Unique digital controller with 3 wave functions and a constant flow mode Sine wave technology for low running noise Low voltage Energy efficient motor Suitable for saltwater and freshwater Wear resistant ceramic shaft and bearings Detachable footplate with anti vibration rubber feet Splash proof connection between the pump and controller