Double Diaphragm Pump Pump Operation Type Air Operated Max Flow 12 gpm Max Temp - Pumps 150 Degrees F Housing Material - Pumps Aluminum Inlet/Outlet Size 1/2 in Connection Style NPT Air Inlet Size 1/4 in FNPT Diaphragm Material - Pumps Santoprene(R) Agency Compliance CE REACH RoHS Valve Type Ball Max Flow GPM 12 gpm Max Operating Pressure 100 psi Ball Material Santoprene(R) Check Seat Material Polypropylene Max Dia Solids 3/32 in Manifold Connection Multiport