Suction / delivery connections Boxer 251 / Boxer 252 1 1/2” f BSPP (*) Suction / delivery connections FDA Boxer 252 2” Clamp BS 4825 Air fitting 1/2” f BSPP Max. flow rate* 340 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 6 mm Noise 80 dB