Single and twin impeller centrifugal pumps NM, NMS Close coupled centrifugal pumps with flanged connections Technical data Construction Close-coupled centrifugal pumps; electric motor with shaft directly connected to the pump. Pump casing with axial suction and radial delivery dimensions and performance according to EN 733. B-NM, B-NMS: bronze version Applications -For clean liquids without abrasives, which are non-aggressive for the pump materials ( solids content up to 0.2% ) . -For water supply. -For heating, air conditioning, cooling and circulation -For civil and industrial applications. -For fire fighting applications. - For irrigation. Operating conditions Liquid temperature from -10 ° C to + 90 ° C. Ambient temperature up to 40° ! C. Total suction lift up to 7 m. Maximum permissible working pressure up to 10 bar. Continuous duty Motor 2-pole induction motor, 50 Hz ( n " 2900 rpm) . NM, NMS: three-phase 230/ 400 V ± 10% up to 3 kW; 400/ 690 V ± 10% from 4 to 75 kW. Insulation class F. Protection IP 54 Classification scheme IE2 for three-phase motor from 0, 75 kW. Constructed in accordance with: EN 60034-1; EN 60034-30 Materials Components : NM, NMS Pump casing : Cast iron Lantern bracket NM Casing cover for NMS Impeller : Cast iron GJL 200 EN 1561 Shaft : AISI 303 up to 2.2 kW AISI 430 from 3 kW to 75 kW Mechanical seal : Carbon - Ceramic - NBR Counter-flanges : Steel Fe 430B UNI 7070 Spesifications Type : NM 40/ 12 CE P2 1, 5 kW 2 HP Q m3/ h : 15 - 16.8 - 18.9 - 21 - 24 - 27 - 30 - 33 - 37, 8 - 39 - 42 - 45 - 48 - 54 Q l/ min 250 - 280 - 315 - 350 - 400 - 450 - 500 - 550 - 630 - 650- 700 - 750 - 800 - 900 H m : 17, 5 - 17 - 16, 5 - 16 - 15 - 13, 5 - 12 - 10, 5 - 7, 5 - 6, 5 rpm : 2900 rpm Freq. : 50 Hz