End-suction centrifugal pumps EN 733
Single-stage end-suction centrifugal pumps, with bearing bracket.
The electropumps N, B-N, N4, B-N4 series comply with the European Regulation no. 547/2012 in force starting from 01.01.2013.
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.
Standardized mechanical seal in accordance with ISO 3069.
Stuffing box seal (on request).
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 and for agriculture.
For fire fighting applications.
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 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
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
IE3 efficiency class for three-phase motors (IE2 up to 0,65 kW).
IP 55 protection.
Motor suitable for operation with frequency converter.
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