NF

Characteristic curves

0

100

150

200

250

300

350

40

0

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

)

H

(

m

)

N

P

S

H

(

m

)

η

(

%

)

P

(

k

W

)

H

(

m

)

N

P

S

H

(

m

)

η

(

%

)

P

(

k

W

)

100

90

80

70

60

50

40

30

20

10

25

20

15

10

5

0

80

60

40

20

0

20

15

10

5

0

120

100

9

0

8

0

7

0

6

0

5

0

4

0

3

0

4

0

3

0

2

0

1

0

0

8

0

6

0

4

0

2

0

0

2

0

1

5

1

0

5

0

S Ø255

A Ø245

NF 50-25

0

n = 2900 rpm

B Ø229

NPSH1

6

C Ø209

0

20

40

60

80

10

0

Q (m3/h)

0

400

600

800

1000

1200

1400

1600

Q (l/min

)

0

5

10

15

20

2

5

Q (l/s

)

S

B

A

C

S

A

B

C

A,C

B

S

0

20

40

60

80

10

0

Q (m3/h)

0

200

300

400

500

60

0

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

A Ø256

NF 50L-250

n = 2900 rpm

B Ø242

NPSH1

6

C Ø218

0

40

60

80

100

120

14

0

Q (m3/h

)

0

500

1000

1500

200

0

Q (l/min)

0

5

10

15

20

25

30

3

5

Q (l/s

)

A

B

C

A

C

B

C

B

A

30

0

25

0

20

0

H

(

f

t

)

15

0

10

0

5

0

20

P

(

H

P

)

0

50

25

N

P

S

H

(

f

t

)

0

40

0

30

0

25

0

H

(

f

t

)

20

0

15

0

10

0

4

0

2

0

P

(

H

P

)

0

5

0

2

5

N

P

S

H

(

f

t

)

0

0

20

40

60

80

100

120

14

0

Q (m3/h

)

NPSH16

H

(

m

)

N

P

S

H

(

m

)

η

(

%

)

P

(

k

W

)

14

9

8

0

7

0

6

0

5

0

4

0

3

0

2

0

1

0

2

5

2

0

1

5

1

0

5

0

8

0

6

0

4

0

2

0

0

2

0

1

5

1

0

5

0

0

200

300

400

500

600

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

)

NF 50L-20

0

A Ø21

6

n = 2900 rp

m

B Ø20

6

C Ø19

4

NPSH16

0

40

60

80

100

120

140

Q (m3/h

)

0

500

1000

1500

2000

Q (l/min)

0

5

10

15

20

25

30

35

Q (l/s

)

A

B

C

A

C

B

C

B

A

25

0

20

0

15

0

H

(

f

t

)

10

0

5

0

2

0

0

5

0

0

P

(

H

P

)

N

P

S

H

(

f

t

)

0

20

40

60

80

100

120

140

Q

Q (m3/h)