Suction / delivery connections Boxer 503 3” f BSPP (*) Suction / delivery connections FDA Boxer 503 4” Clamp BS 4825 Air fitting 3/4” f BSPP Max. flow rate* 800 l/min Max. supply air pressure 8 bar Max. head* 80 m Max negative suction head – dry-running** 4 m Max negative suction head – with pump primed 9,5 m Max. diameter suspended solids 10 mm Noise 80 dB