N, N4

Execution

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):
N = 2900 rpm. ;
N4 = 1450 rpm.
The electropumps N, B-N, N4, B-N4 series comply with the European Regulation no. 547/2012 in force starting from 01.01.2013.

Flanges (on demand):
Size
Flanges
32-160 to 50-250
Threaded flanges PN 16 EN 1092-1
65-125 to 150-400
Overlapping soldering flanges PN 10-16 EN 1092-1 (PN 10 per DN 200)
Shaft sealing
- Mechanically sealed according to iso 3069.
Stuffing box seal (on request).

Applications

For clean liquids without abrasive parts, not aggressive for pump materials (with solid parts up to 0.2% max).
For water supply.
For heating, air conditioning, cooling and circulation systems.
For civil and industrial applications and for agriculture.
For fire fighting applications.
For irrigation.

Utilisation limits

Liquid temperature: -10 °C to +90 °C.
Ambient temperature up to 40 °C.
Total suction lift up to 7 m.
Maximum permissible working pressure up to 16 bar (10 bar per N,N4 32-12,16,20; N,N4 40-25; N,N4 50-20,25, N4 65-31, N,N4 100-250,315,400, N4 125-250,400, N4 150-400 and bronze version).
Maximum permissible rotation speed: see table on page 32ad317a-c172-400f-958b-5c649d0cf20d