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Calpeda NM, NM4 Close-coupled centrifugal pumps - Nm, Nms
Construction
NM, NM4 Close-coupled centrifugal pumps; electric motor with extended shaft
directly connected to the pump up to 22 kW (15 kW for NM4).
NMS, NMS4 Close-coupled centrifugal pumps, new bracket construction for
standard motors (stub-shaft construction) with integrated thrust bearing.
Rated speed of rotation (50 Hz):
NM, NMS ≈ 2900 rpm.
NM4, NMS4 ≈ 1450 rpm.
Pump casing with axial suction and radial delivery on top, main dimensions and
performance according to EN 733 with additional sizes for completion. (NMS4
80/400).
NM(S), NM(S)4: version with pump casing and lantern bracket in cast iron.
BNM(S), 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)
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.
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 for NM 32/12;
NM,NM4 32/16,20; NM,NM4 40/25; NM,NM4 50/20,25; NM4 65/31; NM,NM4
100/25; NM4 100/315,400; NM4 125/250 and bronze version).
Continuous duty.
Motor
2-pole induction motor, 50 Hz (n ≈ 2900 rpm).
NM, NMS: three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10% from 4 to 75 kW.
4-pole induction motor, 50 Hz (n ≈ 1450 rpm).
NM4, NMS4: three-phase 230/400 V ± 10% up to 3 kW;
400/690 V ± 10%, from 4 to 90 kW;
Insulation class F.
Protection IP 54 (IP 55 for NMS, NMS4).
Motor suitable for operation with frequency converter.
Three-phase motors with efficiency class IE2 up to 0.65 kW, IE3 from 0.75
to 55 kW, IE4 from 75 kW.
Constructed in accordance with: EN 60034-1; EN 60034-30-1.
Special features on request
Other voltages.
Impeller in chrome-nickel stainless steel AISI 316 for: from 32/... to 80/...
Frequency 60 Hz (as per 60 Hz data sheet).
Protection IP 55.
Special mechanical seal
IE4 efficiency class for three-phase motors
Single-phase motor (NMM) up to 1,8 kW.
Higher or lower liquid or ambient temperatures.
- Cooling mixtures with temperatures from 0 to -30°C.
- Water with the temperature from 90° to 140°C.
- Oil with temperature up to 200°C and/or max density 30 cSt
Designation
Example: BNM(S)4 EI 32/16A/B
B = Bronze version (no indication: the pump is in the Cast Iron version)
NM = Series
S = Series Version Stub-Shaft
4 = 4-pole version (without indication, 2-pole version)
EI = With frequency converter I-MAT
32 = Delivery port diameter in mm
16 = Nominal impeller diameter
A = Impeller size
/B = It refers to a revision
The electropumps comply with the European Regulation no. 547/2012.
Materials
Components NM, NM4, NMS, NMS4 BNM, BNM4, BNMS, BNMS4
Pump casing Cast iron GJL 250 EN 1561 for PN 10 Bronze CC480K EN 1982
Cast iron GJS 400-15 EN 1563 for PN 16
Lantern bracket NM Cast iron GJL 200 EN 1561 Bronze CC480K EN 1982
Casing cover for NMS(4) Cast iron GJL 200 EN 1561 Bronze CC480K EN 1982
Lantern bracket NMS(4) Cast iron GJL 200 EN 1561 Cast iron GJL 200 EN 1561
Impeller
Cast iron GJL 200 EN 1561
Cast iron GJL 250 EN 1561 Bronze CC480K EN 1982
For ..65/315; 80/315,400; 100/315,400; 125/315,400;
150/315,400
Brass CW617N EN 12167 Brass CW617N EN 12167
For .. 32/12-16-20, .. NM 40/20 For .. 32/12-16-20, .. NM 40/20
Shaft Chrome-nickel steel 1.4305 EN 10088 (AISI 303) Stainless Steel 1.4401 EN 10088 (AISI 316)
Steel 1.4401 EN 10088 AISI 316 (NMS, NMS4)
Steel 1.4462 EN 10088 (AISI 2205) for NMS4150/400S Steel 1.4462 EN 10088 (AISI 2205) for BNMS4150/400S
Mechanical seal Carbon - Ceramic - NBR Carbon - Ceramic - NBR
Counter-flanges Steel 1.0044 EN 10025-2 (Fe 430B) Steel 1.0044 EN 10025-2 (Fe 430B)
BNM NM 32/12F
Specific References
No customer reviews for the moment.
Construction
NM, NM4 Close-coupled centrifugal pumps; electric motor with extended shaft
directly connected to the pump up to 22 kW (15 kW for NM4).
NMS, NMS4 Close-coupled centrifugal pumps, new bracket construction for
standard motors (stub-shaft construction) with integrated thrust bearing.
Rated speed of rotation (50 Hz):
NM, NMS ≈ 2900 rpm.
NM4, NMS4 ≈ 1450 rpm.
Pump casing with axial suction and radial delivery on top, main dimensions and
performance according to EN 733 with additional sizes for completion. (NMS4
80/400).
NM(S), NM(S)4: version with pump casing and lantern bracket in cast iron.
BNM(S), 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)