The Aquavar SPD Plus variable-speed pump controller was developed specifically for commercial submersible and above-ground centrifugal pumps. THE SPD Plus adjusts motor speed to match the hydraulic needs of the system and maintain pressure, substantially reduces energy draw during lower flow and allows the pump to run at its highest efficiency. Designed for multiple applications, the Aquavar SPD Plus provides the pump professional with flexibility and energy savings for applications such as: irrigation, agriculture, commercial building booster, rural water systems, and upgrades and retrofitting.  Variable-speed pump controller

Goulds Water Technology. www.completewatersystems.com