NM, NMD
Close-coupled, centrifugal pumps with screwed connections; electric motor with extended shaft directly connected to the pump.
NM: single-impeller
NMD: with two back-to-back impellers (with axial thrust balancing).
Connections: threaded ports ISO 228/1 (BS 2779).
NM, NMD: version with pump casing and lantern bracket in cast iron.
BNM, BNMD: version with pump casing and lantern bracket in bronze.
The pumps are supplied fully painted.
Technical Specifications
Flow
1 / 66
mc / h
Head
3.5 / 114
m
Power
0.37 / 9.2
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 irrigation.
- For heating, air-conditioning, cooling and circulation plants.
- For civil and industrial applications.
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 (16 bar for pumps NMD 25/190; NMD 32/210; NMD 40/180).
- Continuous duty.
| Brands | Calpeda |
|---|---|
| Category Top Level | Building Services |
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Centrifugal pumpsn≈1450 1/min
Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump up to 15 kW, new bracket construction for standard motors (Stub-shaft construction) from 18,5 to 75 kW with integrated thrust bearing.
Pump casing with axial suction and radial delivery on top, main dimensions and performance according to EN 733 with additional sizes for completion.
NM(S)4: version with pump casing and lantern bracket in cast iron.
BNM(S)4: version with pump casing and lantern bracket/casing cover in bronze.
The pumps are supplied fully painted.
Version with frequency converter (on request)
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).
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