ed. 09/202

6

NM, NMS

Characteristic curves n ≈ 2900 rp

m

0

100

150

200

250

300

35

0

U.S. g.p.m

.

S

20

9

Ø

A

20

0

Ø

NM(S) 50/2

0

B

18

8

Ø

H

m

N

P

S

H

m

η

η

(

%

)

P

k

W

S

A

B

P

H

P

S

A

B

Q m /h

3

9

0

8

0

7

0

6

0

5

0

4

0

3

0

2

0

0

200

300

400

500

600

Q (U.S. g.p.m.

)

N

P

S

H

(

m

)

η

(

%

)

P

(

k

W

)

H

(

m

)

7

0

6

0

200

5

0

150

4

0

H

f

t

3

0

100

2

0

50

1

0

0

0

0

Q m /h

3

9

0

8

0

7

0

6

0

5

0

4

0

3

0

2

0

l/mi

n

0

1000

500

150

0

1

5

20

15

10

10

5

3

8

0

5

6

0

4

0

2

0

0

8

6

2

0

4

1

0

N

P

S

H

f

t

2

0

0

0

180

160

50

0

140

120

40

0

100

30

0

H

(

f

t

)

80

60

20

0

40

10

0

20

0

40

60

80

100

120

140

Q (mc/h

)

0

500

1000

1500

2000

Q (l/min

)

0

5

10

15

20

25

30

35

Q (l/s)

80

100

60

40

5

0

P

(

H

P

)

20

0

70

0

60

50

40

30

20

16

12

4

0

8

2

0

4

N

P

S

H

(

f

t

)

0

0

A Ø 32

5

NMS 50/31

5

B Ø 30

0

C Ø 28

3

D Ø 26

5

A

B

C

D

D

A

B

C

A

D

C

B

0

20

40

60

80

100

120

140

Q (mc/h

)

0

100

150

200

250

300

35

0

U.S. g.p.m

.

H

m

N

P

S

H

m

η

η

(

%

)

P

k

W

100

90

80

70

60

50

40

30

20

10

20

10

0

80

60

40

20

0

1

0

8

6

4

2

0

S

25

5

Ø

NM(S) 50/25

A

24

5

Ø

B

22

9

Ø

C

20

9

Ø

0

Q m /h

3

2

0

30

40

50

6

0

l/mi

n

50

0

0

100

0

7

0

8

0

S

A

B

C

A/S

A

B

C

70

300

250

200

H

f

t

150

100

50

30

20

10

P

H

P

0

3

0

2

0

1

0

N

P

S

H

f

t

0

0

Q m /h

3

2

0

30

40

50

6

0

8

0

61