N, N4
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End-Suction Centrifugal Pumps standardized EN 733 Construction Single-stage end-suction centrifugal pumps, with bearing bracket. Nominal duty points and main dimensions in accordance with EN 733. Back Pull-Out construction, for simple and quick dismantling and reassembly. N, N4: version with pump casing and lanter bracket in cast iron. B-N, B-N4: version with pump casing and lanter bracket in bronze. (the pumps are supplied fully painted). Rated speed of rotation (50 Hz): Connections: PN 10 flanges EN 1092-2. Counter-flanges (on request) Sizes Flanges from 32-160 to 50-250 Screwed flanges PN 16 EN 1092-1 from 65-125 to 150-400 Flanges for welding PN 10 EN 1092-1 Shaft sealing – Standardized mechanical seal in accordance with ISO 3069. – Stuffing box seal (on request). 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 and for agriculture. 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. Maximum permissible rotation speed: see table on page 70. Pump-Motor unit The electropumps N, B-N, N4, B-N4 series comply with the European Regulation no. 547/2012 in force starting from 01.01.2013. Materials Components Pump casing Casing cover Impeller Shaft Shaft sleeve Mechanical seal Counter-flanges N, N4 N, N4 B-N, B-N4 Mechanical seal Stuffing box Mechanical seal Cast iron Bronze GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Cast iron Bronze GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Brass P- Cu Zn 40 Pb 2 UNI 5705 For 32-125, 32-160, 32-200, 40-200 Chrome steel Cr-Ni-Mo steel Carbon steel 1.4104 EN 10088 1.4401 EN 10088 C 40 UNI 7845 (AISI 430) (AISI 316) Bronze _ _ G-Cu Sn5 Zn5 Pb5 EN 1982 with chromate surface _ Carbon - Ceramic - NBR Carbon - Ceramic - NBR Steel Fe 430B UNI 7070 N,N4 pump connected to a standard electric motor in B3 construction form (EN 60072-1), by means of a baseplate, driven by a flexible coupling and with coupling protection. Three-phase 400 V , 50 Hz classification scheme IE2 for three-phase motor from 0,75 kW. IP 55 protection. Motor suitable for operation with frequency converter. Special features on request - Special mechanical seal. - Chrome-nickel steel AISI 316 pump-shaft. - Higher or lower liquid or ambient temperatures. - Other motor protection. - Explosion proof construction in accordance with Directive 94/9 EEC (ATEX). - Motor for other voltage. - Frequency 60 Hz (as per 60 Hz data sheet).

End-Suction Centrifugal Pumps standardized EN 733 Performance n ≈ 2900 rpm PUMP POMPA MOTOR MOTORE PUMP POMPA Bronze construction. P3 Pump power input. P2 Rated motor power output. Standard construction. * Maximum suction lift 1-2 m.

End-Suction Centrifugal Pumps standardized EN 733 Performance n ≈ 2900 rpm POMPA PUMP POMPA PUMP MOTORE MOTOR MOTORE MOTOR P3 Pump power input. * Maximum suction lift 1-2 m. P2 Rated motor power output. Bronze construction. Standard construction. MOTORE MOTOR PUMP POMPA PUMP POMPA ° Minimum positive suction head 1 m.

End-Suction Centrifugal Pumps standardized EN 733 Performance n ≈ 1450 rpm POMPA PUMP POMPA PUMP MOTORE MOTOR MOTOR MOTORE Standard construction. P2 Rated motor power output. P3 Pump power input. * Maximum suction lift 1-2 m.

End-Suction Centrifugal Pumps standardized EN 733 Performance n ≈ 1450 rpm POMPA PUMP POMPA PUMP MOTORE MOTOR MOTOR MOTORE POMPA PUMP POMPA PUMP POMPA PUMP POMPA PUMP MOTORE MOTOR Standard construction. P2 Rated motor power output. P3 Pump power input. * Maximum suction lift 1-2 m.

End-Suction Centrifugal Pumps standardized EN 733 Performance n ≈ 1450 rpm PUMP POMPA PUMP POMPA MOTOR MOTORE MOTOR MOTORE PUMP POMPA PUMP POMPA MOTOR MOTORE Standard construction. PUMP POMPA PUMP POMPA P2 Rated motor power output. * Maximum suction lift 1-2 m. P3 Pump power input. Regulation (EU) No 547/2012 - The benchmark for most efficient water pumps is MEI ≥ 0,70. - The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy...

End-Suction Centrifugal Pumps standardized EN 733 NPSH NPSH ftft

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733 NPSH NPSH ftft

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733

End-Suction Centrifugal Pumps standardized EN 733 Shaft extension ISO 775 Parallel key UNI 6604

End-Suction Centrifugal Pumps standardized EN 733 TYPE POMPA MOTOR MOTORE

End-Suction Centrifugal Pumps standardized EN 733 Dimensions n≈ TYPE POMPA B-N4, B-N4, B-N4, MOTOR MOTORE

End-Suction Centrifugal Pumps standardized EN 733 Interchangeability of parts Bearing housing Pump shaft Shaft sealing Ball bearings Suction pipe: recommended minimum inside diameter (DN) for different capacities (Q) Threaded pipe Maximum permissible rotation speed 32-125 40-125 50-125

End-Suction Centrifugal Pumps standardized EN 733 Cutting edge hydraulics The geometry of the impeller and the pump casing are optimized to achieve maximum efficiency and the best suction capability. Flexible The option to choose between cast iron and bronze materias for the hydraulic parts in contact with the pumped liquid allows N-N4 series pumps to be selected for use with different types of liquids. Robust The mechanical structure of the hydraulic parts in contact with the pumped liquid are dimensioned to guarantee the maximum resistence to mechanical stress. Also the casing cover is...