
The Davey RB2/SP is a replacement RainBank controller designed for surface-mounted pump installations. This is the controller unit only—ideal for replacing a faulty controller or building a custom rainwater harvesting system with your existing pump. Using Davey's patented dual-source technology, the RB2/SP intelligently prioritizes rainwater from your tank and automatically switches to mains backup when the tank is low or empty. The controller features intelligent flow detection and operates without problematic solenoid valves. This replacement unit requires separate brass fittings, tank float switch, and dual check valve for installation.