NM Close coupled centrifugal pumps with flanged connections - Calpeda - #1

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17 2 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 performance according to EN 733. NM: version with pump casing and lanter bracket in cast iron. B-NM: version with pump casing and lanter bracket in bronze. (the pumps are supplied fully painted). Connections: Flanges according to PN 10, EN 1092-2. Counter-flanges (on request) Sizes Flanges from NM 32/... to NM 50/... Screwed flanges EN 1092-1, PN 16 from NM 65/... to NM 100/250 Flanges for welding EN 1092-1, PN 10 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 plants. -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: 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. - Packed gland (only for NM standard construction). - Single-phase motor (NMM) up to 1.5 kW. - Explosion proof construction in accordance with Directive 94/9 EEC (ATEX). - Higher or lower liquid or ambient temperatures. Materials Components NM B-NM 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 NM 32/12-16-20, NM 40/20 B-NM 32/125-160-200, B-NM 40/200 Shaft Cr Ni steel AISI 303 up to 2.2 kW Cr Ni Mo steel Cr steel AISI 430 AISI 316 from 3 kW to 75 kW Mechanical seal Carbon - Ceramic - NBR Counter-flanges Steel Fe 430B UNI 7070 Coverage chart n Å 2900 rpm 5 6 7 8 NM 32/12 NM 40/12 NM 50/12 NM 65/12 NM 65/16 NM50M NM 65/250 NM 65/200 NM 80/250 NM 80/16 8N0/M200 NM 100/200 NM 100/250 NM 50/16 NM 50/20 NM 50/25 NM 40/16 NM 40/20 NM 40/25 NM 32/16 NM 32/20 5 9 10 Q m 3/h 20 30 40 50 100 10 20 30 40 50 m 100 H ft H 130 100 150 l/min 300 400 500 1000 20 30 40 50 100 200 300 30 40 50 U.S. g.p.m. Imp. g.p.m. 100 200 300 400 40 50 60 70 80 90 100 200 300 400 20 30 200 300 400 2000 3000 4000 5000 400 500 1000 500 1000 2000 500 8000 72 821 C Close Coupled Centrifugal Pumps with flanged connections NM 10/2010