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ConstructionClose-coupled centrifugal pumps; electric motor with extended shaftdirectly connected to the pump up to 15 kW, new bracket construc-tion for standard motors (Stub-shaft construction) from 18,5 to 75kW with integrated thrust bearing. Pump casing with axial suctionand radial delivery on top, main dimensions and performance accor-ding to EN 733 with additional sizes for completion.NM(S)4: version with pump casing and lanter bracket in cast iron.B-NM(S)4: version with pump casing and lanter bracket/casing
cover in bronze. (the pumps are supplied fully painted).ConnectionsSizes ConnectionsNM4 25/... Threaded ports ISO228from NM4 32/.. to NMS4 150/400 Flanges according to PN 10, EN 1092-2Counter-flanges (on request)Sizes Flangesfrom NM4 32/.. to NM4 50/.. Screwed flanges EN 1092-1, PN 16from NM4 32/.. to NMS4 150/400 Flanges for welding EN 1092-1, PN 10
Applications- For clean liquids without abrasives, which are non-aggressive
for the pump materials (contents of solids up to 0,2%).- For water supply. - For heating, air conditioning, cooling and
circulation plants. - For civil and industrial applications.- When low noise operating is required. - For irrigation.
Operating conditionsLiquid 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.Continuous duty.
Motor4-pole induction motor, 60 Hz (n 1750 rpm).NM4, NMS4: three-phase 220/380 V, 380/660 V.Insulation class F. Protection IP 54.(IP 55 for NMS4).Motor suitable for operation with frequency converter from 1,1 kW.Constructed in accordance with: EN 60034-1; EN 60034-30.
Special features on request- Other voltages. - Protection IP 55.- Bronze impeller. - Special mechanical seal.- Higher or lower liquid or ambient temperatures.- Motor suitable for operation with frequency converter up to 0,75 kW.
31
Close Coupled Centrifugal PumpsNM4, NMS4NM4, NMS4 60 Hz60 Hz
Coverage chart n = 1750 rpm
6 7 8 9 10 20 30 40 50 100
5
10
NM4 25/200
NM4
NM4 25/160
NM4 25/125
NM4 32/16 NM4 40/16 NM4 50/16 NM4 65/16
NM4 80/16
NM4 100/20
NM4 125/250
NM4 100/25
NM(S)4 100/315NMS4 125/315
NMS4 150/315
NMS4 100/400 NMS4 125/400NMS4 150/400
NM4 80/20
NM4 80/25
NM4 80/315
NMS4 80/400
NM4 65/20
NM4 65/25
NM4 65/31
NM4 50/20
NM4 50/25
NM4 40/20
NM4 40/25
NM4 32/20
20
Hm
30
40
50
100 150Qm /hl/min 300 400 500 1000
20 30 50 100 200 30040
30 40 50U.S. g.p.m.
Imp. g.p.m.
100 200 300 400
40
50
Hft
100
200
20
30
200 300 4002000 3000 4000 5000
500 1000400
500 1000 2000
500
3
4
7
10
2
10
10 20
2 33 430 50
580
1.510000
2000
3000
700
70
72.822.C
3
MaterialiComponents NM4, NMS4 B-NM4, B-NMS4Pump casing Cast iron BronzeLantern bracket NM4 GJL 200 EN 1561 G-Cu Sn 10 EN 1982Casing cover for NMS4Lantern bracket NMS4 Cast iron GJL 200 EN 1561Impeller Cast iron Bronze
GJL 200 EN 1561 G-Cu Sn 10 EN 1982Brass P- Cu Zn 40 Pb 2 UNI 5705
For NM4 25/125 - 25/160 - 25/200 - NM4 32/16 - 32/20 - 40/20Shaft AISI 303 up to 1,1 kW Cr Ni Mo steel
AISI 430 from 1,5 kW to 75 kW AISI 316Mechanical seal Carbon - Ceramic - NBRCounter-flanges Steel Fe 430B UNI 7070
giovanniCasella di testo07/2014
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32
B - NM4
NM4 25/12A-60/A 0,25 0,34B- NM4 25/160BE-60 NM4 25/160BE-60 0,37 0,5
B- NM4 25/200C-60/A NM4 25/200C-60/A 0,37 0,5
B- NM4 25/200A-60/B NM4 25/200A-60/B 0,75 1
B- NM4 25/160AE-60 NM4 25/160AE-60 0,37 0,5
B- NM4 25/200B-60/A NM4 25/200B-60/A 0,55 0,75
1 1,2 1,5 1,89 2,4 3 3,6 4,2 4,8 5,4 6 6,6 7,5 8,4 9,6 10,8 12 13,2 15NM4
P2
kW HP
Qm3/h
l/min 16 20 25 31,5 40 50 60 70 80 90 100 110 125 140 160 180 200 220 2506,25 6,2 6,1 6,1 6 5,7 5,4 5 4,6 4,1 3,6
9,9 9,9 9,8 9,75 9,7 9,4 9,3 9 8,5 8 7,2 6,5
15,4 15,4 15,3 15,3 15,2 15,1 14,9 14,8 14,5 14,3 14 13,7 13,1 12,3 11 9,2 6,8
7,95 7,9 7,85 7,8 7,7 7,5 7,2 6,9 6,5 5,8 5
11,8 11,8 11,8 11,7 11,6 11,5 11,3 11,1 10,9 10,5 10,1 9,7 8,8 7,7 5,9 3,7
19,1 19,1 19,1 19 18,9 18,8 18,7 18,6 18,4 18,2 18 17,7 17,2 16,6 15,6 14,4 12,8 10,3
Hm
B - NM4
B-NM4 32/16B-60 NM4 32/16BE-60 0,37 0,5B-NM4 32/16A-60 NM4 32/16AE-60 0,37 0,5
B-NM4 32/20A-60/A NM4 32/20A-60/A 0,75 1
B-NM4 40/16B-60 NM4 40/16B-60/A 0,55 0,75
B-NM4 40/20B-60/A NM4 40/20B-60/A 1,1 1,5
B-NM4 4025/C-60/B NM4 40/25C-60/B 1,5 2
B-NM4 4025/A-60/B NM4 40/25A-60/B 3 4
B-NM4 32/20B-60 NM4 32/20BE-60 0,55 0,75
B-NM4 40/16C-60 NM4 40/16C-60/A 0,37 0,5
B-NM4 40/16A-60/A NM4 40/16A-60/B 0,75 1
B-NM4 40/20A-60/A NM4 40/20A-60/A 1,1 1,5
B-NM4 4025/B-60/B NM4 40/25B-60/B 2,2 3
2,4 3 3,6 4,2 4,8 5,4 6 7,5 8,4 9,6 10,8 12 13,2 15 16,8 18,9 21 24 27 30NM4
P2
kW HP
Qm3/h
l/min 40 50 60 70 80 90 100 125 140 160 180 200 220 250 280 315 350 400 450 500
7,6 7,6 7,5 7,4 7,4 7,3 7,1 6,6 6,1 5,3 4,4
13,1 13 12,9 12,8 12,6 12,4 12,2 11,4 10,8 9,8 8,7 7,3* 5,7*
6,75 6,75 6,65 6,53 6,35 6,15 5,9 5,53 4,9 4,2 3,2
9,7 9,7 9,65 9,6 9,5 9,37 9,2 9 8,7 8,3 7,8 7 5,8
15,3 15,2 15,1 15 14,7 14,5 14 13,7 13 12,2 10,8 9,3
22,7 22,7 22,7 22,6 22,6 22,5 22,3 22,1 21,6 20,6 19,2 17,5 14,2 10,1
9,2 9,2 9,1 9,1 9 9 8,8 8,3 7,8 7,2 6,4 5,4*
14,9 14,8 14,7 14,6 14,5 14,3 14,1 13,6 13,2 12,4 11,4 10* 8,5*
8,1 8,1 8 7,95 7,8 7,6 7,4 7,2 6,75 6,25 5,5 4,6
13,3 13,2 13,1 13 12,7 12,5 12 11,5 10,5 9,5 7,8
18,3 18,2 18,1 18 17,9 17,6 17,3 16,8 15,7 14,2 11,8 8,9 4,4
25,1 25 25 24,9 24,9 24,8 24,6 24,4 24 23,6 22,6 21,3 18,5 15 10,7*
Hm
B - NM4
B-NM4 50/16B-60/A NM4 50/16B-60/B 1,1 1,5B-NM4 50/16A-60/A NM4 50/16A-60/B 1,1 1,5
NM4 50/20B-60/B 1,5 2
B-NM4 5025/C-60/B NM4 50/25C-60/B 2,2 3
B-NM4 5025/A-60/B NM4 50/25A-60/B 4 5,5
B-NM4 65/16B-60/A NM4 65/16B-60/A 1,1 1,5
NM4 65/20B-60/A 2,2 3
NM4 65/25B-60/A 4 5,5
NM4 65/31C-60/A 5,5 7,5
NM4 65/31A-60/A 9,2 12,5
NM4 50/20C-60/B 1,1 1,5
NM4 50/20A-60/B 2,2 3
B-NM4 5025/B-60/B NM4 50/25B-60/B 3 4
B-NM4 65/16C-60/A NM4 65/16C-60/A 1,1 1,5
B-NM4 65/16A-60/A NM4 65/16A-60/A 1,5 2
NM4 65/20A-60/A 3 4
NM4 65/25A-60/A 5,5 7,5
NM4 65/31B-60/A 7,5 10
10,8 12 13,2 15 16,8 18,9 21 24 27 30 33 37,8 42 48 54 60 66 75 84NM4
P2
kW HP
Qm3/h
l/min 180 200 220 250 280 315 350 400 450 500 550 630 700 800 900 1000 1100 1250 14009 9 9 8,95 8,8 8,55 8,25 7,7 7 6,25 5,4 3,8*
11,2 11,2 11,1 11 10,8 10,4 10 9,1 8 6,8 5,3 2,7
16,7 16,8 16,9 16,9 16,9 16,8 16,6 16,3 15,74 15,2 14,4 13 11,2 8,5 5,4
23,1 23,1 23,1 23 22,8 22,6 22,2 21,5 20,5 19,5 18,2 15,3 12*
6,6 6,6 6,5 6,4 6,3 6 5,7 5,2 4,5 3,7
9,3 9,3 9,2 9,2 9,1 8,9 8,6 8,1 7,5 6,8 6* 4,5*
14,5 14,4 14,3 14,2 14,1 13,9 13,6 13,1 12,5 11,8 11* 9,5* 8*
23,2 23,1 23 23 22,8 22,6 22,4 21,8 21,2 20,4 19,2* 17* 14*
32 32 31,5 31 31 30,5 30 29,5 29 28 26,5* 24* 20,5*
10,5 10,6 10,6 10,6 10,6 10,5 10,3 9,9 9,3 8,6 7,9 6,6* 5,3*
12,8 12,8 12,8 12,75 12,6 12,3 11,9 11,3 10,5 9,4 8,1 5,8 3,4
18,9 18,9 18,9 18,8 18,5 18,2 17,8 17,1 16,2 15,1 13,3 10,3 7,2*
24,1 24,1 24,1 24 23,8 23,6 23,2 22,6 21,9 21 19,7 17 14*
7,9 7,8 7,7 7,7 7,5 7,2 7 6,5 5,8 5 4,1*
12,5 12,4 12,3 12,2 12,1 11,7 11,4 10,8 10 9,2 8,3* 6,6*
19 19 18,8 18,7 18,6 18,3 18 17,5 16,8 15,6 14,2* 11,8* 9*
27 27 26,5 26 26 25,5 25 24,5 23,5 22 20* 17* 13*
36 36 35,5 35 35 34,5 34 33,5 33 32 31* 29* 26,5*
Hm
B-NMS4
NM4 80/16C-60/A 1,1 1,5NM4 80/16B-60/A 1,5 2
NM4 80/20C-60/A 2,2 3
NM4 80/20A-60/A 4 5,5
NM4 80/25B-60/A 5,5 7,5
NM4 80/31C-60/A 9,2 12,5
B-NMS4 80/315A-60 NM4 80/315A-60/A 15 20
B-NMS4 80/400B-60 NMS4 80/400B-60 22 30
NM4 80/16A-60/A 2,2 3
NM4 80/20B-60/A 3 4
NM4 80/25C-60/A 4 5,5
NM4 80/25A-60/A 7,5 10
B-NMS4 80/315B-60 NM4 80/315B-60/A 11 15
B-NMS4 80/400C-60 NMS4 80/400C-60 18,5 25
B-NMS4 80/400A-60 NMS4 80/400A-60 30 40
30 33 37,8 42 48 54 60 66 75 84 96 108 120 132 150 168 180 192 210NM4
P2
kW HP
Qm3/h
l/min 500 550 630 700 800 900 1000 1100 1250 1400 1600 1800 2000 2200 2500 2800 3000 3200 35005,3 5,2 5,1 5 4,9 4,5 4,1 3,8 3
8,6 8,5 8,4 8,3 8,1 7,9 7,6 7,3 6,9 6,1 4,5
12,5 12,5 12,4 12,3 12,1 12 11,7 11,4 10,6 9,8 8,5 6,5*
17,4 17,3 17,1 17 16,6 16,1 15,8 15,2 14,1 13 11,3 9,5*
24,2 24,2 24,1 24 24 23,9 23,4 23 22 21,1 19,4 17,5* 15,2* 12,7*
32,5 32,5 32,5 32 32 31,5 31,5 31 30,5 29,5 28 25,5* 23* 21*
49,5 49,5 49 49 48 47 46 44 41 37,5 32 25*
63,5 63,5 63 63 62,5 62 61 60 58 55,5 52 46* 40* 33,5*
6,6 6,5 6,4 6,3 6,1 5,9 5,5 5,2 4,6 3,7
10,9 10,8 10,7 10,6 10,5 10,3 10 9,7 9,1 8,2 6,7
14,2 14,1 14 14 13,9 13,8 13,5 13,4 12,8 12 11 9,2* 7,4*
20,8 20,8 20,7 20,7 20,5 20,1 19,8 19,4 18,3 17,3 15,7 13,8* 11,5*
28,5 28,5 28,5 28 27,5 27,5 27 27 26 25 23 21* 18*
37,5 37,5 37,5 37 37 36,5 36,5 36 35,5 35 33 31,5* 29,5* 27*
56,5 56,5 56 55,5 55 54,5 53 52 49,5 47 41 35* 27*
Hm
Performance n 1750 rpm
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
33
P2 Rated motor power output.H Total head in m.
NM4, NMS4 Standard construction.B-NM4, B-NMS4 Bronze construction.
P2 Rated motor power output.IA/IN D.O.L. starting current / Rated current
*Maximum suction lift 1-2 m.Tolerances according to UNI EN ISO 9906:2012.
B-NMS4
NM4 100/20C-60/A 3 4NM4 100/20B-60/A 4 5,5
NM4 100/25B-60/A 7,5 10
B-NMS4 100/315C-60 NM4 100/315C-60/A 11 15
B-NMS4 100/315A-60 NMS4 100/315A-60 18,5 25
B-NMS4 100/400B-60 NMS4 100/400B-60 30 40
NM4 100/20A-60/A 5,5 7,5
NM4 100/25A-60/A 9,2 12,5
B-NMS4 100/315B-60 NM4 100/315B-60/A 15 20
B-NMS4 100/400C-60 NMS4 100/400C-60 22 30
B-NMS4 100/400A-60 NMS4 100/400A-60 37 50
48 54 60 66 75 84 96 108 120 132 150 168 180 192 210 240 270 300 330NM4
P2
kW HP
Qm3/h
l/min 800 900 1000 1100 1250 1400 1600 1800 2000 2200 2500 2800 3000 3200 3500 4000 4500 5000 55009,4 9,4 9,2 9,1 8,9 8,5 8 7,2 6,4 5,5 4*
14 14 13,9 13,9 13,8 13,7 13,3 12,7 12 11,3 9,8* 8,2* 7* 5,5*
22,4 22,4 22,2 22,1 21,9 21,4 21 20,4 19,6 18,8 17* 15* 13,3* 11,6* 8,8*
32,5 32,5 32,4 32,3 32 31,5 31 30,5 29,5 28,5 26* 22,5* 20* 17,5* 13,5*
43 42,8 42,5 42,5 42 42 41 40 38,5 37 34* 30,5* 28*
59,5 59,3 59 58,8 58,5 58,3 58 57,7 57 56 53,5* 51* 49* 47* 44*
11,7 11,7 11,6 11,5 11,4 11,2 10,8 10 9,2 8,3 6,5* 4,6*
19,4 19,4 19,3 19,2 19 18,6 18 17,4 16,5 15,5 13,8* 11,5* 10* 8,2* 5,5*
28 28 27,9 27,9 27,5 27 26 25 23,5 22 19,5* 15,5* 13* 10*
38,5 38,5 38,3 38,3 38 37,9 37,5 37 36 35 32,5* 30* 28* 26* 21*
51,5 51,3 51 50,8 50,5 50,3 50 49 48 46 44* 41* 39* 37* 33*
Hm
B-NMS4
NM4 125/25E-60/A 5,5 7,5NM4 125/25D-60/A 7,5 10
B-NMS4 125/250B-60 NM4 125/250B-60/A 11 15
B-NMS4 125/315B-60 NMS4 125/315B-60 22 30
B-NMS4 125/400C-60 NMS4 125/400C-60 37 50
B-NMS4 125/400A-60 NMS4 125/400A-60 55 75B-NMS4 150/315D-60 NMS4 150/315D-60 18,5 25
B-NMS4 150/315B-60 NMS4 150/315B-60 30 40
B-NMS4 150/400C-60 NMS4 150/400C-60 45 60
B-NMS4 150/400A-60 NMS4 150/400A-60 75 100
NM4 125/25C-60/A 9,2 12,5
B-NMS4 125/250A-60 NM4 125/250A-60/A 15 20B-NMS4 125/315C-60 NMS4 125/315C-60 18,5 25
B-NMS4 125/315A-60 NMS4 125/315A-60 30 40
B-NMS4 125/400B-60 NMS4 125/400B-60 45 60
B-NMS4 150/315C-60 NMS4 150/315C-60 22 30
B-NMS4 150/315A-60 NMS4 150/315A-60 37 50
B-NMS4 150/400B-60 NMS4 150/400B-60 55 75
84 96 108 120 132 150 168 180 192 210 240 270 300 330 360 390 420 450 480NM4
P2
kW HP
Qm3/h
l/min 1400 1600 1800 2000 2200 2500 2800 3000 3200 3500 4000 4500 5000 5500 6000 6500 7000 7500 800011,2 11 10,7 10,4 10 9,4 8,5 8 7,3 6,2
16,8 16,6 16,4 16,1 15,8 15,2 14,6 14 13,3 12,3 10,3* 8* 5,4*
23 22,9 22,8 22,7 22,5 22 21,5 20,9 20,3 19,2 17,2* 14,9* 12,2* 9*
32 31,7 31,5 31 30,8 30,5 29,5 29 28,5 27 25* 22* 18,5* 14,5*
45,5 45 44,8 44,6 44,5 44,3 43,5 43 42 40 36,5* 32,5* 28*
59,5 59,3 59 58,8 58,7 58 57,5 57 56,5 55,5 53* 50* 46* 41,5*
25,8 25,6 25,4 25,2 24,9 24,4 23,2 21,9 20,2 18,4 16,2 14* 11,4*
35,6 35,5 35,4 35,3 35,2 35 34,4 33,7 32,5 30,9 29 26,8* 24,4* 21,8*
51 50,5 50 49,5 49,3 49 48 46,5 44,5 42,5 40 37,5* 34,5* 31,5*
14 13,9 13,7 13,4 13 12,4 11,6 11 10,4 9,3 7,3* 5*
19,4 19,2 19 18,8 18,6 18 17,4 17 16,3 15,2 13,2* 10,8* 8*
28 27,8 27,5 27,3 27 26,5 25,5 25 24 23 20* 17* 13*
37 36,7 36,5 36 35,8 35,5 35 34,5 34 32,5 30,5* 28* 25* 21,5*
51,7 51,5 51,3 51 50,7 50 49,5 49 48 46,5 43,5* 40* 35,5* 31*
22,8 22,6 22,3 22 21,8 21,2 20 18,5 16,7 14,7 12,4 10* 7,4*
30,5 30,4 30,2 30,1 30 29,8 29 27,9 26,5 24,8 22,8 20,7* 18,2* 15,4*
45,5 45 44,5 44 43,8 43,5 42 40,5 38,5 36 33 30* 27*
59 58,5 58,3 58 57,8 57,5 57 55,5 54 52 49,5 47* 44* 41* 37,5*
Hm
P2 220 V / 380 V Y
kW HP IN A IN A IA/IN0,25 0,34 1,7 1 3,50,37 0,5 1,65 0,95 4,10,55 0,75 2,6 1,5 4,50,75 1 3,8 2,2 5,71,1 1,5 5,8 3,3 3,31,5 2 7 4 7,82,2 3 9,8 5,7 7,63 4 13,5 7,8 5,7
P2 380 V / 660 V Y
kW HP IN A IN A IA/IN4 5,5 10,2 5,9 7,1
5,5 7,5 15,3 8,7 87,5 10 19,1 11,1 8,29,2 12,5 22,6 13,2 8,511 15 26,8 15,5 8,615 20 34,5 20 9
18,5 25 42 24,2 7,322 30 49,6 28,5 7,530 40 64,5 37,2 7,537 50 84 48,5 645 60 95,5 55 6,455 75 120 69 7,375 100 166 95,5 6
3
Performance n 1750 rpm
Rated currents
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
34
Characteristic curves n = 1750 rpm
H
Q 3m /h
Q 3m /h
H
Q 3m /h
Q 3m /h
A
B
A
A
A
B
m /h3Q
H
m /h3Q
A
B
C
A
BC
NM4 25/12 NM4 25/160
NM4 25/200
0
10
0 8
0 0
1
2
3
4
5
5
10
0
0
10
15
20
25
30
0.202 4 6
10 20 30
10 20
0.05
0.10
0.15
0.05
0.10
0.15
0.20
0.25
45 114 50 52.5 54%
U.S. g.p.m.
Imp. g.p.m.
m
ft
P
HP
NPSH
ft
NPSH
m
kW
P
0 872.5502 4 6
2
4
6
8
15
5
0
5052.5
2
12
0 8
0 0
1
2
3
4
5
5
10
0
0
10
15
20
25
30
0.42 4 6
10 20 30
10 20
0.1
0.2
0.3
0.1
0.2
0.3
0.4
0.5
40 144
130
45 50
47.550
52%
U.S. g.p.m.
Imp. g.p.m.
m ft
P
HP
NPSH
ft
NPSH
m
kW
P
0 872.5512 4 6
4
6
8
1035
15
0
0
0
10 20 30
10 20 30 40
2 4 6 8
Imp.g.p.m.
U.S. g.p.m.
43.5
30
40
0.2
0.4
0.8
0.6
1.0PHP
PkW
0.40.200
1.0
5
10
15
60
50
40
m ft
20
0
1.2
40
42
0 1072.5522 4 6 8
4
6
8
10
20
30
NPSH
ft
NPSH
m
2
10
30
20
10
100
30194
175
157
35
35
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
35
Characteristic curves n = 1750 rpm
H (m
)P
(kW)
(%
)NP
SH (m
)
72.555N
l/minQ m /h3 2520151050
0 100 200 300 400
Q m /h3 2520151050
0 25 50 75 100U.S. g.p.m.
0
10
NPSH
(ft)
20
30
0
10
H (ft
)
00,20,40,60,81
P (H
P)
NM4 40/16
0
2
4
6
8
10A
A
144B
B
132
C
C
121
0
0,2
0,4
0,6
0,8
20
40
60
80
0
2
4
6
H
m /h3Q
m /h3
A
B
AB
H
m /h3Q
m /h3
B
A
AB
H
m /h3Q
Q Q
m /h3Q
A
B
B
A
NM4 32/16 NM4 32/20
NM4 40/20
0
10
0 15
0 0
2
4
6
8
10
10
20
0
0
10
15
20
25
30
0.4
0.1
O.2
0.3
0.1
0.2
0.3
0.4
0.5
m
ft
P
HP
NPSH
ft
NPSH
m
kW
P
0 1572.553
2
4
6
8
30
5
05 10
50
10 50
20 6030 40
20 30 40Imp.g.p.m.
U.S. g.p.m.
62.5%
50 143
131
5560
5550
60
5 10
0
20
0 15
0 0
2
4
6
8
10
10
20
0
0
20
30
40
50
60
0.8
0.2
0.4
0.6
0.2
0.4
0.6
0.8
1.0
m
ft
P
HP
NPSH
ft
NPSH
m
kW
P
0 1572.554
5
10
15
30
10
05 10
50
10 50
20 6030 40
20 30 40Imp.g.p.m.
U.S. g.p.m.
52.5%
35 178
17040 45
50
4540
51.5
5 10
50
5
20
0 24
0.2
0
2
4
6
10
20
0
0
1.2
10
15
20
30
40
0.4
0.6
1.0
Imp.g.p.m.
U.S. g.p.m. 20 40 60 80 100
20 40 60 80
8 1612 204
0.5
1
8
58%
ftm
PkW
PHP
NPSH
ft
NPSH
m
45 178
168
50 52.5
52.550
55
0 2472.5568 1612 204
50
60
1.5
0
57.555
3
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
36
Characteristic curves n = 1750 rpm
H (m
)P
(kW)
(%
)NP
SH (m
)
H (m
)P
(kW)
(%
)NP
SH (m
)
H (m
)P
(kW)
(%
)NP
SH (m
)
H (m
)P
(kW)
(%
)NP
SH (m
)
72.557N 72.558N
72.559N 72.560N
l/minQ m /h3 50403020100
0 200 400 600 800
l/minQ m /h3 50 60403020100
0 200 400 600 800 1000 l/minQ m /h3 50403020100
0 200 400 600 800
l/minQ m /h3 302010 3525150
Q m /h3 50403020100
Q m /h3 50 60403020100 Q m /h3 50403020100
Q m /h3 302010 3525150
0 200 400300 500
0 50 100 150 200U.S. g.p.m.
0 50 100 150 200U.S. g.p.m.0 50 100 150 200 250U.S. g.p.m.
0 50 100 150U.S. g.p.m.
0
10
20
30
NPS
H (ft)
0
10
NPS
H (ft)
0
10
20
NPSH
(ft)
0
10
20
NPSH
(ft)
70
80
90
10
20
0
30
40
50
60
H (ft
)
70
80
10
20
0
30
40
50
60
H (ft
)
40
60
0
20
H (ft
)
20
30
0
10
H (ft
)
0
1
2
3
P (H
P)
0
1
2
3
4P
(HP)
012345
P (H
P)
0
0,5
1,0
1,5
P (H
P)
NM4 40/25 NM4 50/16
NM4 50/20 NM4 50/25
0
10
20
30
A
A
227
B
B
219C
C
196
0,0
1,0
2,0
3,0
0
20
40
60
80
0
2
4
6
8
0
2
4
6
8
10
12A
A
156
B
B
144
00,20,40,60,81,01,2
40
60
50
70
80
02468
10
0
5
10
15
20
A
A A
188
B
BB
164
C
CC
154
0,00,51,01,52,02,5
20
40
60
80
0
2
4
6
0
5
10
15
20
25A 225
B 220C 201
0
1
2
3
4
30
40
50
60
70
0
2
4
6
8
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
37
Characteristic curves n = 1750 rpm
H
Q 3m /h
Q 3m /h
CB
A
A
B
C
H
m /h3Q
m /h3Q
A
B
AB
H
m /h3Q
m /h3Q
A
B
A
B
H
m /h3Q
m /h3Q
A
B
C
A
B
C
NM4 65/16 NM4 65/20
NM4 65/25 NM4 65/31
2
12
0 80
0 0
1
2
3
4
5
5
10
0
0
10
15
20
25
30
1.620 40 60
100 200 300
100 200
0.4
0.8
1.2
0.4
0.8
1.2
1.6
2.0
55 148
137
129
60 65
6570
72.5
78%
U.S. g.p.m.
Imp. g.p.m.
m ft
P
HP
NPSH
ft
NPSH
m
kW
P
0 8072.56120 40 60
4
6
8
1035
15
70 72.5
77.5
75
75
0
0
4
16
0 100
40
2
4
6
8
20
25
15
100 200 300
100 200 300 400
20 40 60 80
48
32
8
12
24
16
Imp.g.p.m.
U.S. g.p.m.
mft
NPSH
m
69,5%
0 10072.57920 40 60 80
0
4
0
2
1
3
1
2
3
5
P
kW
HPP
10ft
NPSH
45 182
171
50 55 6065
67.5
69 67.565
60
0
0
8
0 100
80
2
4
6
8
20
25
15
100 200 300
100 200 300 400
20 40 60 80
64
16
24
48
32
Imp.g.p.m.
U.S. g.p.m.
m
ft
NPSH
m
64%
0 10072.56720 40 60 80
0
8
0
4
2
6
2
4
6
10
P
kW
HPP
10ft
NPSH
50 224
213
4
12
20
28
16
55 60 62.5
62.560
5550
0
0
10
40
0 100
100
100 200 300
100 200 300 400
20 40 60 80
120
80
20
30
60
40
Imp.g.p.m.
U.S. g.p.m.
mft
63%
0 10072.56420 40 60 80
4
6
10
6810
14PHPP
kW
42
2
4
6
10
20
NPSH
ft
NPSH
m
0
8
2
0
50 283
266
245
5560
62
60
55
3
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
38
Characteristic curves n = 1750 rpm
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
39
Characteristic curves n = 1750 rpm
Q m /h3
Q 3m /h
HA
B
C
AB
C
H
m /h3Q
m /h3Q
A
B
C
AB
C
NM4 80/315 NMS4 80/400
0 150
0 0
50 10020
4
8
16
2
4
6
8
10
10
20
0
0 500
500
200 600300 400
200 300 400
8
16
24
Imp. g.p.m.
U.S. g.p.m.
P
HP
PkW
NPSHNPSH
mft
0 50 100 15072.568
80
20
30
60
40
m ft
10
40
67%
65
60100
120
30
6563
63
605550 288
270
257
0
0
10
30
50
70
0
100
150
200
20
40
60
50
500
200 500
50 100
200 600300 400
200 300 400
150
Imp.g.p.m.
U.S. g.p.m.
m ft
0 50 100 15072.569
PkW
HP
P
10
20
10
20
30
0
4030
0
4
6 20
25
15
NPSH
ft
NPSH
m
8
2
56%
10
40 355
335
316
45 50
5045
40
55
54
3
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
40
Characteristic curves n = 1750 rpm
NM4 100/20 NM4 100/25
NM(S)4 100/315 NMS4 100/400
H
m /h3Q
m /h3Q
A
BC
A
B
C
H
m /h3Q
m /h3Q
A
B
BA
H
m /h3Q
m /h3Q
AB
C
A
B
C
H
m /h3Q
m /h3Q
A
B
C
AB
C
0
0
0
15
0 200
0
2
200 400 600
200 400 600 800
0
40
5
1030
20
Imp.g.p.m.
U.S. g.p.m.
mft 79%
0
50 100 150
20072.57050 100 150
4
6
8
10
20NPSH
m
NPSH
ft
10
4
8P
kW
PHP
2
4
6
8
30
185
170
157
6560
70
75
65
10
0
75
70
0
0
5
25
0 240
Imp.g.p.m.
U.S. g.p.m. 200 400 600 800 1000
200 400 600 800
0 0
80 160
50
10
10
15
20
120 20040
2
3
4
5
6
40
30
20
60
m
P
kW
NPSH
m
ft
NPSH
HPP
ft 78%
0 24072.57180 160120 20040
7555 229
216
7570
65
10
14
18
2
4
6
8
5
10
70
8060 70
5560
65
74
0
0
0
40
0 250
5
10
20
30
0
50
20
0
16
0
250 500 750
250 500 750 1000
50 100 150 200
100
10
4
8
12
20
40
10
20
Imp.g.p.m.
U.S. g.p.m.
m
ft
P
HP
NPSH
ftm
NPSH
kW
P
0 25072.57250 100 150 200
15
30
286 267
250
60 6570
70
72%
65
5550
60
55
0
0
24
60
0 250
10
30
40
50
40
2
10
250 500 750
250 500 750 1000
50 100 150 200
100
20
4
6
8
10
20
20
40
Imp.g.p.m.
U.S. g.p.m.
mft
P
HP
NPSH
ftm
NPSH
kW
P
0 25072.57350 100 150 200
30
60
55 347
323
297
6065 66
67.5%
67 6562.5
66150
200
30
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
41
Characteristic curves n = 1750 rpm
H
m /h3Q
m /h3Q
A
B
C
D
E
ABC
DE
H
m /h3Q
m /h3Q
A
B
C
A
BC
H
m /h3Q
m /h3Q
A
B
C
AB
C
NM(S)4 125/250 NMS4 125/315
NMS4 125/400
0
0
5
25
0
0
20
20
10
15
20
0
2
4
6
8
0
10
4
8
16
80
70
60
50
40
30
20
m
PHP
NPSHft
NPSH
m
PkW
ft
0
Imp.g.p.m.
U.S. g.p.m. 300 600 900 1200 1500
300 600 900 1200
300
78%
360200100
300 36072.574200100
10
20
0
75706560 233
217
203
189
175
75
7065
60
0
0
10
40
0 400
0
100
2
400 800 1200
400 800 1200 1600
0
120
80
20
30
60
40
Imp.g.p.m.
U.S. g.p.m.
mft 78%
0
100 200 300
40072.575100 200 300
4
6
8
10
20NPSH
m
NPSH
ft
10
20
40P
kW
PHP
10
20
30
40
30
65 288
271
258
7075
75
70
65
0
0
50
0
0
60
30
40
2
4
6
8
10
10
160
140
120
100
80
60
m
P
HP
NPSHftNPSH
m
P
kW
ft
0
Imp.g.p.m.
U.S. g.p.m. 300 600 900 1200 1500
300 600 900 1200
300
73%
360200100
300 36072.576200100
20
0
6560 354
333
318
70
70
65
180
20060
20
80
4020
40
30
3
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
42
Characteristic curves n = 1750 rpm
H
m /h3Q
m /h3Q
A
B
CD
AB
CD
H
m /h3Q
m /h3Q
A
B
C
A
BC
NMS4 150/315 NMS4 150/400
0
0
0
40
0 500
5
10
20
30
0
50
40
0
8
0
500 1000 1500
500 1000 1500 2000
100 200 300 400
100
20
2
4
6
10
20
20
40
Imp.g.p.m.
U.S. g.p.m.
m
ft
P
HP
NPSH
ftm
NPSH
kW
P
0 50072.577100 200 300 400
30
60
55 288
272
253 244
60 65 70 75 77%
75
7065
0
0
24
60
0 500
20
30
40
50
80
2
10
500 1000 1500
500 1000 1500 2000
100 200 300 400
100
40
4
6
8
10
20
0
Imp.g.p.m.
U.S. g.p.m.
mft
PHP
NPSH
ftm
NPSH
kW
P
0 50072.578100 200 300 400
60
60 357
335
318
65 7075
77%
7675
70
150
200
0
20
40
80
100
30
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
-
43
3
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
4.93.098
a
m1
m2
w
h1
h2
n1
n2
s b
DN2DN2
n3
l2l1
g1D
N1
fM
H
DN1
1
g
DN1 DN2
ISO 22810
B-NM4
B-NM4 25/160AE-60-BE-60
mmPicture
56 380 100 160 228 37,5 27,5 190 150 30 38 9,5
a fM h1 h2 H m1 m2 n1 n2 n3 b s l1 l2 w
102 102 25011
1 B-NM4 25/200A-60/A-BE-60-CE-60 G 11/2 G 1 63 400 125 180 253 45 32,5 245 200 49 45 11,5 125 125 250
19-19
kg
29-25-23
Bronze construction B-NM4
Standard construction
Dimensions and weights
DN1g
DN1 DN2
ISO 228NM4 kg
mmPicture
a fM h1 h2 H m1 m2 n1 n2 n3 b s l1 l2 w
11 27-23-21,51
NM4 25/200A-60/A, BE-60, CE-60G 11/2 G 1
63 385 125 180 253 45 32,5 245 200 49 45 11,5 125 125 25010 17,5NM4 25/160AE-60, BE-60 56 380 100 160 228 37,5 27,5 190 150 30 38 9,5 102 102 25010 13,5NM4 25/12A-60/A 56 313 90 140 199 37,5 27,5 170 130 9 38 9,5 85 88 250
3 42
Picture B-NMS4
DN DG DK DE N W32 76 100 140 4 19 1840 84 110 150 4 19 1850 99 125 165 4 19 2065 118 145 185 4 19 2080 132 160 200 8 19 22
mm
100 156 180 220 8 19 24125 184 210 250 8 19 24150 211 240 285 8 23 26200 266 295 340 8 23 30
A4.93.466.1
g1
mm
12
B-NM4
B-NM4 32/16A-60-B-60 50 32 80 410 132 160 260 100 70 240 190 47 - 50 14 -
a fM h1 h2 H m1 m2 n1 n2 n3 w1 b b1 s s1 l1 l2 w
120 120 255 38-38
kg
45-4112B-NM4 32/20A-60/A-B-60 50 32 80 410 160 180 288 100 70 240 190 62 - 50 14 - 140 140 25543-40-3812B-NM4 40/16A-60/A-B-60-C-60 65 40 80 410 132 160 260 100 70 240 190 47 - 50 14 - 119 119 25555-5512
2
B-NM4 40/20A-60/A-B-60/A 65 40 100 470 160 180 288 100 70 265 212 62 - 50 14 - 140 140 25573-7389-3
B-NM4 4025/B-60/B-C-60/BB-NM4 4025/A-60/B 65 40 100
535560 190 225
318350 125 95 320 250 15 65 14 175 175
156125
55-55122 B-NM4 50/16A-60/A-B-60/A 65 50 100 470 160 180 288 100 70 265 212 62 - 50 14 - 127 141 25579,5105-92-3
B-NM4 5025/C-60/B-D-60/AB-NM4 5025/A-60/B-B-60/B 65 50 100
535560 190 225
318350
-
-
-
-
n5
140190
140190125 95
205280
175250
205280
175250320 250 15 65 14
5460
1012
5460
1012 175 175
156125
63-6371152
B-NM4 65/16B-60/A-C-60/AB-NM4 65/16A-60/A 80 65 100
470495 160 200
288306 125 95 280 212
6260 - 65 14 -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- 150 172 255300
DN2DN1 w4 w5
10
10
-
-
-
-
-
-
h4 g2
6
6
B-NMS4 80/315A-60-B-60B-NMS4 80/400C-60B-NMS4 80/400B-60B-NMS4 80/400A-60B-NMS4 100/315B-60-C-60B-NMS4 100/315A-60B-NMS4 100/400C-60B-NMS4 100/400B-60B-NMS4 100/400A-60B-NMS4 125/250A-60-B-60B-NMS4 125/315C-60B-NMS4 125/315B-60B-NMS4 125/315A-60B-NMS4 125/400C-60B-NMS4 125/400B-60B-NMS4 125/400A-60B-NMS4 150/315D-60B-NMS4 150/315C-60B-NMS4 150/315B-60B-NMS4 150/315A-60B-NMS4 150/400C-60B-NMS4 150/400B-60B-NMS4 150/400A-60
66666666866668886668886
435520520540435432520540540435520520540540540540520520540540540540625
395435435455395382435455460395435435455461461461435435455460461461535
271318318334271312318334384259318318334409409454318318334384409404432
1515151915151519191515151919192415151919192424
6070708360707083
10360707083
103103100707083
103103100100
2025252520252525552025252525252525252555252545
254279279318254279279318356254279279318356356406279279318356356406457
457542542580457512542580605457542542580640640707542542580605640707747
948974
10251025963984
104010401139951989
104010401139119913071009106010601159121912771280
100125125125125125125125125150150150150150150150200200200200200200200
80808080
100100100100100125125125125125125125150150150150150150150
808080808080
10010010080
100100100100100100100100100100100100100
315355355355315315400400400315400400400400400400450450450450450450450
400435435435400400500500500400500500500500500500550550550550550550550
120120120120120120150150150120150150150150150150150150150150150150150
160160160160160160200200200160200200200200200200200200200200200200200
315355355355315315355355355355355355355400400400400400400400450450450
250280280280250250280280280250280280280315315315280280280280315315315
220268268268230230268268268235247247247280280280260260260260295295295
232268268268250250280280280268278278278305305305298298298298328328328
125125125125140140140140140140140140140140140140160160160160160160160
a fM h1 h2 H m1 m2 n1 n2 n5 w1 b b1 s s1 l1 l2 w m4 m5 g2
mmkg
4
DN1 DN2
DN
DE
W
DG
DK
4.93.094
n1n2
h1
h2
H
fMa
DN2DN
1
w1m5wm1m2
m4
DN2l1 l2
bs
b1
g2
n5
s1
A
1818181818182222221822222222222222222222222222
fMa
DN2
DN
1
m1
H
m2
w
4.93.083.1
n2
s b
n1
n3
DN2 l2 l1
h2
h1 g1
a
DN2
DN
1
m1m2
n1
b1
g2
h4
h1
h2
DN2l1 l2
n2 n5b
s s1
A
g2*
A
4.93.078.1
fM
m4m5
H
w1w
Picture
Holes
Flanges EN 1092-2
-
44
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
Dimensions and weights
DN
DE
W
DG
DK
4.93.094
66666686668886668886
520520540432520540540520520540540540540520520540540540540625
435435455382435455460435435455461461461435435455460461461535
318318334312318334384318318334409409454318318334384409404432
1515191515191915151919192415151919192424
707083707083103707083103103100707083103103100100
2525252525255525252525252525252555252545
279279318279279318356279279318356356406279279318356356406457
542542580512542580605542542580640640707542542580605640707747
97410251025984
104010401139989
104010401139119913071009106010601159121912771280
125125125125125125125150150150150150150200200200200200200200
808080
100100100100125125125125125125150150150150150150150
1818181822222222222222222222222222222222
80808080
100100100100100100100100100100100100100100100100
355355355315400400400400400400400400400450450450450450450450
435435435400500500500500500500500500500550550550550550550550
120120120120150150150150150150150150150150150150150150150150
160160160160200200200200200200200200200200200200200200200200
355355355315355355355355355355400400400400400400400450450450
280280280250280280280280280280315315315280280280280315315315
268268268230268268268247247247280280280260260260260295295295
268268268250280280280278278278305305305298298298298328328328
125125125140140140140140140140140140140160160160160160160160
a fM h1 h2 H m1 m2 n1 n2 n5 w1 b b1 s s1 l1 l2 w m4 m5 g2
mmkg
4
DN1 DN2-
-
413308366419506331356-
-
524-
349374421-
594715-
DN DG DK DE
N
W
32 76 100 140 4 19 1840 84 110 150 4 19 1850 99 125 165 4 19 2065 118 145 185 4 19 2080 132 160 200 8 19 22
mm
100 156 180 220 8 19 24125 184 210 250 8 19 24150 211 240 285 8 23 26200 266 295 340 8 23 30
g1
mmNM4 kg
a fM h1 h2 H m1 m2 n1 n2 n3 w1 b s s1 l1 l2 w m4 m5
12 37-33-3165 40 80 410 132 160 268 100 70 240 190 47 - 50 14 - 119 119 25512 38-34,550 32 80 410 160 180 288 100 70 240 190 62 - 50 14 - 140 140 25512 30,5-3050 32 80 410 132 160 260 100 70 240 190 47 - 50
b1
- 14 - 120 120 255
65 40 100 470 160 180 288 100 70 265 212 62 - 50 14 - 140 140 255 12 41-40,5
65 40 100 495525 180 225308
340 125 95 320 250 60 - 65 14 - 175 175300330 15
66,5-6278
65 50 100 470 160 180 288 100 70 265 212 62 - 50 14 - 127 141 255 12 40-39,5
65 50 100 480505 160 200 288 100 70 265 2126260 - 50 14 - 140 153
265310 14
44,557-52,5
65 50 100 490530 180 225308
340 125 95 320 250 60 - 65 14 - 175 175300330 15
6885,5-78
80 65 100 470495 160 200 288 125 95 280 2126260 - 65 14 - 150 172
255300 15
48-4854,5
80 65 100 505525 180 225308
340 125 95 320 250 60 - 65 14 - 155 175310330 15
6173,5
80 65 100 540645 200 250 360385 160 120 360 280 60 - 80 18 - 175 190
345415 18
97116
80 65 125 670720 225 280 410 160 120 400 315 75 - 80 18 - 220 220415465 20
164-153176
100 80 125 495520 180 225288308 125 95 320 250
6260 - 65 14 - 165 193
255300 15
5365,5-61
100 80 125 540560 180 250308
340 125 95 345 280 60 - 65 14 - 170 194320340 15
74,591-82
100 80 125 565670 200 280 360385 160 120 400 315 60 - 80 18 - 191 210
335415 20
102135-124
100 80 125 720 250 315 435 160 120 400 315 90 - 80 18 - 220 232 465 20 181100 80 125 850 260 315 466 160 120 400 315 - 20 80 18 220 232 210 - 269-248
125 100 140 865 260 315 466 160 120 400 315 - 20 80 18 230 250 210 - 280-261
150 125 140 865 260 355 466 160 120 400 315 - 20 80 18
74 14
74 14
74 14 235 268 210 -
g2n5
254 6
254 6
254 6 261-243
125 100 125 565665 200 280 360385 160 120 360 280 60 - 80 18 - 180 212
330410 20
99-90109
125 100 140 685735 225 280 410 160 120 400 315 75 - 80 18 - 205 233415465 20
143152
150 125 140 685735 250 355 435 160 120 400 315 90 -
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435
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435
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h4
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10
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395
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-80 18 -
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- 235 268 415465 20161-149173
2
3
2
2
3
3
DN2DN1
NMS4
NMS4 80/400C-60NMS4 80/400B-60NMS4 80/400A-60NMS4 100/315A-60NMS4 100/400C-60NMS4 100/400B-60NMS4 100/400A-60NMS4 125/315C-60NMS4 125/315B-60NMS4 125/315A-60NMS4 125/400C-60NMS4 125/400B-60NMS4 125/400A-60NMS4 150/315D-60NMS4 150/315C-60NMS4 150/315B-60NMS4 150/315A-60NMS4 150/400C-60NMS4 150/400B-60NMS4 150/400A-60
NM4 40/16A-60/B-B-60/A-C-60/ANM4 32/20A-60/A-BE-60NM4 32/16AE-60-BE-60
NM4 40/20A-60/A-B-60/ANM4 40/25B-60/B-C-60/BNM4 40/25A-60/BNM4 50/16A-60/B-B-60/BNM4 50/20C-60/BNM4 50/20A-60/B-B-60/BNM4 50/25C-60/B-D-60/ANM4 50/25A-60/B-B-60/BNM4 65/16B-60/A-C-60/ANM4 65/16A-60/ANM4 65/20B-60/ANM4 65/20A-60/ANM4 65/25B-60/ANM4 65/25A-60/ANM4 65/31B-60/A-C-60/ANM4 65/31A-60/ANM4 80/16C-60/ANM4 80/16A-60/A-B-60/ANM4 80/20C-60/ANM4 80/20A-60/A-B-60/ANM4 80/25C-60/ANM4 80/25A-60/A-B-60/ANM4 80/31C-60/ANM4 80/315A-60/A-B-60/A
NM4 100/315B-60/A-C-60/A
NM4 125/250A-60/A-B-60/A
NM4 100/20B-60/A-C-60/ANM4 100/20A-60/ANM4 100/25B-60/ANM4 100/25A-60/A
NM4 125/25D-60/A-E-60/ANM4 125/25C-60/A
4
Standard construction
2
Flanges EN 1092-2
Picture
Holes
Picture
n1
b1
g2h1
h2
H
4.93.466.1
fMa
DN2
DN1
w1m5w
Am1m2
m4
DN2l1 l2
n2 n5b
s s1
A
4.93.061.2
l1
w
m1m2
DN2DN2a
fM
DN
1
H
l2
n3
n2s b
g1 h1
h2
n1
-
45
3
Features
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
NM4
Cutting edge hydraulicsThe geometry of the impeller and the pump casing are optimized to achieve maximum efficiencyand the best suction capability.
FlexibilityThe option to choose between cast iron and bronze materias for the hydraulic parts in contactwith the pumped liquid allows NM and NM4 series pumps to be selected for use with differenttypes of liquids.
Compact DesignThe compact design allows for easy installtion even in confined spaces.
Exclusive designAn innovative, patented guard prevents contact with rotating parts, proving protection to the enduser whilst allowing for inspection of the mechanical seal.
ReliabilityThe bearing and shaft are designed to ensure the reduction of the stress, providing high reliabi-lity under all operating conditions.
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46
Features
Close Coupled Centrifugal Pumpswith flanged connections NM4, NMS4NM4, NMS4 60 Hz60 Hz
NMS4
Cutting edge hydraulicsThe geometry of the impeller and the pump casing are optimized to achieve maximum efficiency andthe best suction capability.
FlexibilityThe option to choose between cast iron and bronze materias for the hydraulic parts in contact withthe pumped liquid allows NMS and NMS4 series pumps to be selected for use with different types ofliquids.
New lantern bracket constructionThe lantern brackets incorporate a thrust bearing on the hydraulic side which guarantees the elimina-tion of additional loads on the motor bearings. The flange is sized to be used with standard motorsB35.
Exclusive designAn innovative, patented guard prevents contact with rotating parts, proving protection to the end userwhilst allowing for inspection of the mechanical seal.
Simplified motor maintenanceThe presence of the thrust bearing on the hydraulic side makes it easier to remove the motor, facilita-ting maintenance operations and eliminating the risks of damage to the hydraulic parts.