01/2011

NMP
Self-Priming Centrifugal Pumps

with built-in strainer

Construction
Close-coupled self-priming centrifugal pumps with built-in

strainer.

NMP: version with pump casing and lanter bracket in cast iron.

B-NMP: version with pump casing and lanter bracket in bronze

(the pumps are supplied fully painted).

Applications

For water circulation in swimming pool filtration systems.

For clean or slightly dirty water with solids in suspension.

Operating conditions

Liquid temperature up to 60° C.

Ambient temperature up to 40° C.

Total suction lift up to 7 m.

Maximum permissible working pressure up to 6 bar.

Continuous duty.

Motor 15
2-pole induction motor, 50 Hz (n = 2900 rpm).

NMP: three-phase 230/400 V ± 10% up to 3 kW;

400/690 V ± 10% from 4 to 11 kW;

NMPM: single-phase 230 V ± 10%, with thermal protector.

Insulation class F.
Materials Protection IP 54.

Components NMP B-NMP Constructed in accordance with: EN 60034-1;

Pump casing Cast iron Bronze EN 60335-1, EN 60335-2-41.

Lantern bracket GJL 200 EN 1561 G-Cu Sn 10 EN 1982

Impeller Cast iron Bronze

GJL 200 EN 1561 G-Cu Sn 10 EN 1982

Special features on request
Brass P- Cu Zn 40 Pb 2 UNI 5705 for NMP 32/12

- Other voltages.
Shaft Chrome-nickel steel Cr-Ni-Mo steel

1.4305 EN 10088 (AISI 303) 1.4401 EN 10088 (AISI 316) - Frequency 60 Hz (as per 60 Hz data sheet).

Strainer cover Cast iron Bronze - Protection IP 55.

GJL 200 EN 1561 G-Cu Sn 10 EN 1982

- Special mechanical seal

Strainer Chrome-nickel steel 1.4301 EN 10088 (AISI 304)

- Higher liquid or ambient temperatures.

Mechanical seal Carbon - Ceramic - FPM

Coverage chart n ≈ 2900 rpm

25 30 U.S. g.p.m. 50 100 200 300 400 500

20 Imp. g.p.m. 40 50 100 200 300 400

40

H
m

100
30

NMP 65/16

ft

20

50

NMP 32/12 NMP 50/12

10

0 0
3

5 m /h 10 20 30 40 50 100 120
Q
100 l/min 200 300 400 500 1000 1500 2000

72.891.C

131
NMP
Self-Priming Centrifugal Pumps

with built-in strainer

Performance n ≈ 2900 rpm

Q
3 ~ 230V 400V 1 ~ 230V P1 P2 m /h
3
6,6 9,6 10,8 12 13,2 15 18,9 21 24 30 42 48 54 60 66 75 84 96 108

A A A kW kW HP l/min 110 160 180 200 220 250 315 350 400 500 700 800 900 1000 1100 1250 1400 1600 1800

B-NMP 32/12FE 4 2,3 0,55 0,75 13 12 11 10,5 10 9

B-NMPM 32/12FE 4,5 0,8 0,55 0,75 12 11 10 9,5 9 8

B-NMP 32/12DE 4 2,3 0,75 1 18 17 16 15,5 15 14

B-NMPM 32/12DE 5,8 1,3 0,75 1 17 16 15 14,5 14 13

B-NMP 32/12AE 5 2,9 1,1 1,5 22 21 20,5 20 19,5 18,5

B-NMPM 32/12AE 7,4 1,85 1,1 1,5 21,5 20,5 19,5 19 18,5 17,5

B-NMP 32/12SE 7,5 4,3 B-NMPM 32/12SE 9,2 2 1,5 2 22,5 21,5 21 20,5 20 19 16* 15* 12*

B-NMP 50/12HE 5 2,9 B-NMPM 50/12HE 7,4 1,85 1,1 1,5 9 9 8,5 7,5 5,5 4,5 3
H

B-NMP 50/12GE 7,5 4,3 B-NMPM 50/12GE 9,2 2 1,5 2 m 12 12 11,5 10,5 8 7 5 3,5*

B-NMP 50/12FE 9,15 5,3 2,2 3 16 16 15,5 14,5 12 10,5 8,5 6,5* 5*

B-NMP 50/12DE 11,5 6,6 3 4 18 18 17,5 16,5 15 13 11,5 9,5* 7*

B-NMP 65/16FE 9,6 4 5,5 18 17 16,5 15,5 14,5 13,5 11,5 9,5 6,5*

B-NMP 65/16EE 12 5,5 7,5 20,5 19,5 19 18 17 16 14,5 12,5 9,5*

B-NMP 65/16DE 16 7,5 10 26 25 24,5 24 23 22 21 19 16* 11*

B-NMP 65/16CE 18,5 9,2 12,5 29,5 28,5 28 27,5 27 26,5 25 23,5 20* 16*

B-NMP 65/16AE 21,5 11 15 37,5 36,5 36 35,5 35 34 32,5 30,5 27* 22*

P1 Maximum power input. B-NMP = Bronze construction. * Maximum suction lift 2-3 m.

P2 Rated motor power output. H Total head in m. Tolerances according to ISO 9906, annex A.

Dimensions and weights

a l1 l2

DN2
DN1

H
h2

h1
h3

g1

4.93.067
NMP B-NMP
TYPE
n3 kg kg
m2 s b

m1 n2
B-NMP 32/12FE 30 32
w n1
B-NMP 32/12DE 30 32

B-NMP 32/12AE 31 33

B-NMP 32/12SE 33 35
DN1 DN2 mm

TYPE
B-NMP 50/12HE 37 39
ISO 228 a f h1 h2 h3 H m1 m2 n1 n2 n3 b s l l1 l2 w g1
B-NMP 50/12GE 38,5 40

B-NMP 50/12FE 38,5 41,5

B-NMP 32/12AE-DE-FE
G 2 G 2 195 510 230 280 228 320 100 70 190 140 30 50 14 - 106 99 220 12
B-NMP 50/12DE 47,5 51,5
B-NMP 32/12SE

B-NMP 50/12FE-GE-HE 540 37 234 B-NMP 65/16FE 78,5 89

G 21/2 G 21/2 205 262 322 240 360 100 70 240 190 50 14 - 120 117 12
B-NMP 50/12DE 602 20 298 B-NMP 65/16EE 91 101

B-NMP 65/16FE 717 288 60 298 B-NMP 65/16DE 97 107

B-NMP 65/16DE-EE G 3 G 3 320 748 360 440 320 470 125 95 280 212 49 65 14 - 165 164 319 15 B-NMP 65/16CE 121 130

B-NMP 65/16AE-CE 858 345 43 408 B-NMP 65/16AE 127 137

132
NMP
Self-Priming Centrifugal Pumps

with built-in strainer

Characteristic curves n ≈ 2900 rpm

0 U.S. g.p.m. 20 40 60 80 100 0 U.S. g.p.m. 100 200 300

25 20
80
D Ø 125
52 55
S Ø 130 60
60 NMP 32/12 60
62 NMP 50/12
F Ø 120
A Ø 130
70
η 65%
50
20 15
64 64

D Ø 118
60 62
G Ø 107
64 60
40

60 55
H m

H m
50 H Ø 100

H ft

H ft
15 10 52

30
F Ø 103

40

20

10 66 5
30
η 67%
10

20

5 0 0
3
0 5 10 15 20 25 0 m /h 10 20 30 40 50 60 70
3
m /h
Q Q
0 l/min 100 150 200 250 300 350 400 0 l/min 200 400 600 800 1000

l/s l/s 2
0 1 2 3 4 5 6 0 4 6 8 10 12 14 16 18

1.6 3 4
D

15
S 2.0

1.2
F
3
A 1.5 2
P kW

P kW
P HP

P HP
D G
0.8 2
1.0
H
F 1
0.4 0.5 1

0 0 0 0

8 8
25 25
NPSH m

NPSH m

6 20 6 20
NPSH ft

NPSH ft
15 15
4 4

10 10

2 2
5 5

0 0 0 0
72.063 72.061
0 5 10 15 20 25 0 10 20 30 40 50 60 70
Q m /h Q m /h
3 3

0 U.S. g.p.m. 100 200 300 400 500

40
A Ø 174.5
55
58
60 120
62 NMP 65/16
η 63%

C Ø 158 62
100
30
60

D Ø 148 58

55 80

E Ø 136
H m

H ft

20
F Ø 130
60

40

10

20

0 0
3
0 m /h 20 40 60 80 100 120
Q
0 l/min 500 1000 1500 2000

0 l/s 4 8 12 16 20 24 28 32

A
15
10
C
P kW

P HP

10
D

5 E

F
5

0 0

10
30
NPSH m

8
NPSH ft

6 20

4
10
2

0 0
72.062
0 20 40 60 80 100 120
Q m /h
3

133