AODD-40A Air Operated Double Diaphragm Pump Pump Inlet/Outlet:40mm(1.5 inch); Air inlet size: 1/2" Max flow: 378.5L/min; Max head: 84M (8.4bar); Pump material: Ductile iron(SG iron), Stainless steel(SS304 SS316 SS316L); View More AODD-40A diaphragm pumpaodd-40a pump