Hayward PSV3SDGR PVC 3-Way Diverter Valve The 2-way and 3-way full-flow PSV diverter valves make water flow management simple and easy. The full-flow valves are available with either a 1-1/2-Inch or 2-Inch internal fit. Sturdy CPVC construction ensures long life and resistance to higher temperatures. The handle is removable without tools and allows for quick and easy port customization. The PSV3SM features three externally threaded ports for use with SP1500UNPAK1, which is included with the valve.