Pentair 263037 Diverter Valves are lube-free, have excellent flow characteristics, and are manufactured to strict quality standards. And, as the name says, they never require lubrication. Constructed of durable CPVC or PVC, they provide a lifetime of superior performance at a great price. All of our valves are easily installed and simple to use. When paired with our valve actuators, they're the perfect solution for fully automated operation. The 263037 is 1-1/2" Inside Diameter & 2" Outside Diameter for PVC Pipe connection.