End-suction centrifugal pumps EN 733 2- and 4- pole Product Description
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.
Shaft sealing
- Standardized mechanical seal in accordance with ISO 3069.
- Stuffing box seal (on request).
Description
Technical Specifications
Flow
2.4 / 480
mc / h
Head
1.5 / 95
m
Power
0.25 / 75
kW
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 and for agriculture.
- For firefighting 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 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
Features
- 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 materials 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 resistance to mechanical stress. Also, the casing cover is provided with wings that prevent turbulence in the area of the mechanical sea, increasing the reliability.
- Reliable: The bearing and shaft are designed to ensure the reduction of the stress, providing high reliability
under all operating conditions.
Additional information
| Brands | Calpeda |
|---|---|
| Category Top Level | Building Services |
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NM(S)4: version with pump casing and lantern bracket in cast iron.
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The pumps are supplied fully painted.
Version with frequency converter (on request)
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