NM4 Close coupled centrifugal pumps n=1450 1/min - Calpeda - #1

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29 NM4 Construction Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump. Pump casing with axial suction and radial delivery on top, main dimensions and perfor- mance according to EN 733 with additional sizes for completion. NM4: version with pump casing and lanter bracket in cast iron. B-NM4: version with pump casing and lanter bracket in bronze. (the pumps are supplied fully painted). Connections Sizes Connections NM4 25/125, 25/160, 25/200 Threaded ports ISO!228 from NM4 32/16 to NM4 150/400 Flanges according to PN 10, EN 1092-2 Counter-flanges (on request) Sizes Flanges from NM4 32/16 to NM4 50/25. Screwed flanges EN 1092-1, PN 16 from NM4 32/16 to NM4 150/400 Flanges for welding EN 1092-1, PN 10 Applications - For clean liquids without abrasives, which are non-aggressive for the pump materials (contents of solids up to 0.2%). - For water supply. - For heating, air conditioning, cooling and circulation plants. - For civil and industrial applications. - When low noise operating is required. - 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 4-pole induction motor, 50 Hz (n = 1450 rpm). NM4: 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. Constructed in accordance with EN 60034-1. Special features on request - Other voltages. - Frequency 60 Hz (as per 60 Hz data sheet). - Protection IP!55. - Special mechanical seal. - Higher or lower liquid or ambient temperatures. Materiali Components NM4 B-NM4 Pump casing Cast iron Bronze Lantern bracket GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Impeller Cast iron Bronze GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Brass P- Cu Zn 40 Pb 2 UNI 5705 For NM4 25/125 - 25/160 - 25/200 NM4 32/16 - 32/20 - 40/20 Shaft Cr Ni steel AISI 303 up to 1,1 kW Cr Ni Mo steel Cr steel AISI 430 AISI 316 from 1,5 kW to 75 kW Mechanical seal Carbon - Ceramic - NBR Counter-flanges Steel Fe 430B UNI 7070 10 20 30 40 50 100 5 10 NM4 32/20 NM4 32/16 NM4 25/12 NM4 25/160 NM4 25/200 NM4 40/16 NM4 40/20 NM4 40/25 NM4 50/25 NM4 50/20 NM4 50/16 NM4 65/16 NM4 80/16 NM4 80/20 NM4 100/20 NM4 100/250 NM4 100/315 NM4 80/25 NM4 80/315 NM4 80/400 NM4 65/20 NM4 65/25 NM4 65/31 NM4 125-315 NM4 125/250 NM4 125/400 NM4 100/400 NM4 150/315 NM4 150/400 20 Hm 30 40 50 100 150 200 300 400 500 1000 5000 20 30 40 50 100 200 300 30 40 50 100 200 300 400 40 50 Hf t 100 200 20 30 200 300 400 400 500 1000 500 1000 2000 500 3 4 7 10 2 10 10 Imp. g.p.m. U.S. g.p.m. 20 2 Q 3 40 50 m /h 5 l/min 10000 2000 3000 700 70 72.849.C 3 Coverage chart n = 1450 rpm Close Coupled Centrifugal Pumps n Å 1450 rpm 10/2010