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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

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


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


35


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


36


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


37


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


38



39


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


40


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


41


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


42


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


43

3


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


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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- 235 268 415465 20161-149173

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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


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.

46

Features


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.

Documents

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