Flow Rate: 172, Max PSI: 120, Solids Handling Size: 1/4", Center Section Material: Aluminum, Diaphragm Material: Nitrile, Wetted Parts Material: Nitrile, Connections: 2 - 11-1/2 NPTF - 1, Hardware Material: Carbon Steel, Seat Material: Nitrile, Ball Material: Nitrile