Double Diaphragm Pump Pump Operation Type Natural Gas Operated Max Flow 45 gpm Max Temp - Pumps 220 Degrees F Housing Material - Pumps Stainless Steel Inlet/Outlet Size 1 In. Connection Style NPT Air Inlet Size 1/2 in FNPT Diaphragm Material - Pumps PTFE - Buna Backup Agency Compliance CE ATEX ABS EAC Valve Type Ball Max Flow GPM 45 Max Operating Pressure 100 psi Ball Material PTFE Check Seat Material PTFE Max Dia Solids 1/4 In. Manifold Connection Single