BFQ-40L 1-1/2” Aluminum Alloy Air Operated Diaphragm Pump Model BFQ-40L Pump Material Aluminum Alloy Max. Flow Rate (L/min) 378.5 Fluid Inlet/Outlet Size (in) DN40 (1-1/2” BSP/NPT) Max. Head (m) 84 Air Inlet Size (in) 1/2” BSP/NPT Max. Suction Height (m) 5.48 Max. Particle Size (mm) 4.8 Max. Working Pressure (bar) 8.4 Air Comsumption (m3/min) 0.9