NM, NMS
Construction
NM, NM4 Close-coupled centrifugal pumps; electric motor with extended shaf
t
directly connected to the pump up to 22 kW (15 kW for NM4)
.
NMS, NMS4 Close-coupled centrifugal pumps, new bracket construction fo
r
standard motors (stub-shaft construction) with integrated thrust bearing
.
Rated speed of rotation (50 Hz)
:
NM, NM
S ≈ 2900 rpm.
NM4, NMS
4 ≈ 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. (NMS
4
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)
Connections: Flanges PN 10-16, EN 1092-2 (PN 10 for DN 200
)
Counter-flanges (on request
)
Sizes
Flanges
from NM, NM4 32/.. to NM, NM4 50/..
Screwed flanges EN 1092-1, PN 1
6
from NM, NM4 65/.. to NMS4 150/..
Flanges for welding EN 1092-1, P
N
10-16 (PN 10 for DN 200)
Application
s
For clean liquids without abrasives, which are non-aggressive for the pum
p
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 condition
s
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,NM
4
100/25; NM4 100/315,400; NM4 125/250 and bronze version)
.
Continuous duty
.
Materials
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 0.7
5
to 55 kW, IE4 from 75 kW
.
Constructed in accordance with: EN 60034-1; EN 60034-30-1
.
Special features on reques
t
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 sea
l
IE4 e
fficiency class for three-phase motor
s
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 cS
t
Designatio
n
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-Shaf
t
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 siz
e
/B = It refers to a revisio
n
The electropumps comply with the European Regulation no. 547/2012
.
Components
NM, NM4, NMS, NMS4
BNM, BNM4, BNMS, BNMS4
Pump casing
Cast iron GJL 250 EN 1561 for PN 10
Cast iron GJS 400-15 EN 1563 for PN 16
Bronze CC480K EN 198
2
Lantern bracket NM
Cast iron GJL 200 EN 1561
Bronze CC480K EN 198
2
Casing cover for NMS(4)
Cast iron GJL 200 EN 1561
Bronze CC480K EN 198
2
Lantern bracket NMS(4)
Cast iron GJL 200 EN 1561
Cast iron GJL 200 EN 156
1
Cast iron GJL 200 EN 156
1
Impelle
r
Cast iron GJL 250 EN 156
1
For ..65/315; 80/315,400; 100/315,400; 125/315,400
;
150/315,40
0
Bronze CC480K EN 198
2
Brass CW617N EN 1216
7
For .. 32/12-16-20, .. NM 40/2
0
Brass CW617N EN 12167
For .. 32/12-16-20, .. NM 40/20
Shaft
Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
Steel 1.4401 EN 10088 AISI 316 (NMS, NMS4
)
Stainless Steel 1.4401 EN 10088 (AISI 316)
Steel 1.4462 EN 10088 (AISI 2205) for NMS4150/400S
Steel 1.4462 EN 10088 (AISI 2205) for BNMS4150/400
S
Mechanical seal
Carbon - Ceramic - NBR
Carbon - Ceramic - NB
R
Counter-
flanges
Steel 1.0044 EN 10025-2 (Fe 430B)
Steel 1.0044 EN 10025-2 (Fe 430B)
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