Aro 6661T3-344-C 40 mm (1-1/2 inch) ANSI flange poly air operated diaphragm pump 378 lpm 8.3 bar (120 psi)Aro 6661T3 344 C 40 mm (1 1 2 inch) ANSI flange poly air operated diaphragm pump 378 lpm 8. 3 bar (120 psi) Self priming (dry) to 4. 3 m Ratio: 1: 1 Displacement per cycle: 2. 54 litres Air inlet (female): 1 2 inch NPT(F) Fluid inlet outlet: 1 1 2 inch ANSI DIN flange (Note: 1 1 2 inch NPT(F) threaded flanges available on request) Suspended solids to 6 mm max Sound level: 77. 7 db(A) Materials: Fluid caps and manifold material: Polypropylene (3 piece