Pentair 521485 IntelliValve Valve Actuator Built-in interface allows quick and simple setup of water flow Sealed, maintenance-free design is weather proofed for maximum reliability and extended service life Suitable for 1.5", 2", 2.5" and 3" valve sizes, 24-volt operation for use with standard automation systems Adjustable in 3.75-degree increments within the maximum 180-degree swing Sleek, minimalist design is compact and fits easily within any equipment pad