The GVA-24 Goldline Valve Actuator rotates 2-port and 3-port valves automatically. Use it with Pro Logic or Aqua Plus to automate pool/spa operation, cleaner operation, water features, or a variety of other uses. The industry standard configuration of the GVA-24 means that it is compatible with all major manufacturer?s valves and pool automation systems. The unique cam setting feature ensures a quick and easy installation with the precise control of water flow. For the installers convenience, Goldline also offers kits that combine the GVA-24 valve actuator with 3-port valves (see V&A in Buying Guide). For solar heating installations, Goldline offers the solar kits (see AQL-SOL-KIT in Buying Guide) that combine a valve actuator, 3-port valve and temperature sensor ("solar" sensor).