24255 curve book - rapid allweiler curve book.pdf · version 1 - nt, nshd, nb & dv curve book:...
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CURVE BOOKEND-SUCTION CENTRIFUGAL PUMPS TO EN733 (DIN 24255)
Version 1 - NT, NSHD, NB & DV Curve Book: Rapid Allweiler PumpsWhilst all care has been taken to ensure the accuracy of the information contained in this brochure was correct at the time of printing, please be advised we cannot be held responsible for any errors contained within and or changes that may have taken place. Dimensions contained within are for reference purpose only and should not be used for construction; certified drawings are available upon request. For confirmation of any information contained herewith please contact a member of our technical sales team.
WE HAVE ALL THE TICKS
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1
2 3 4 6 8 10 20 30 40 60 80 100
FLOW RATE [m3/h]
200 300 400 600 800 1000 16002
3
4
6
8
10
[m]
H
20
30
40
60
80
1450 rpm
HEA
D
25-160
25-200
32-160
32-200
40-200
2/25-2002/32-200
40-160
65-16080-160
50-160
100-200
80-200
65-200
50-200
100-250
80-250
65-250
40-25050-250
2/40-250
2/50-250
125-250150-250
200-25065-315
65-400
80-315
100-315
125-315
150-315
200-315
250-315
80-400100-400
125-400200-400
250-400125-400/1
150-400/1
10
20
30
40
100
160
70
2 3 4 6 8 10
FLOW RATE [m3/h]
20 60 100 200 300 400 700
25-160
25-200
32-160
32-200
40-200
2/25-200 2/32-200
40-160
65-16080-160
50-160
125-250
100-200
80-200
65-200
50-200
100-250
80-250
65-25040-250
50-250
2/40-250 2/50-250
2900 rpm
[m]
H
HEA
D
TOMBSTONE CURVES
Pg. no.
25-160 2 4225-200 3 432/25-200 4 4432-160 5 4532-200 6 462/32-200 7 4740-160 8 4840-200 9 4940-250 10 502/40-250 11 5150-160 12 5250-200 13 5350-250 14 542/50-250 15 5565-160 16 5665-200 17 5765-250 18 5865-315 19 65-400 2080-160 21 5980-200 22 6080-250 23 6180-315 24 80-400 25100-200 26 62100-250 27 63100-315 28100-400 29125-250 30 64125-315 31125-400 32125-400/1 33150-250 34150-315 35150-400/1 36200-250 37200-315 38200-400 39250-315 40250-400 41
Size
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
2
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 25mm25mm
1450 rpm
DIN 24 255NT 25-160
30%40%
40%
45%
45%
50%
50%
0 2 4 6 8 10Q (m3/hr)
HEAD
(m)
1
2
3
4
5
6
7
8
9
P (k
W)
0.00
0.10
0.20
0.30
NPSH
(m)
0
1
2
3
4
125
125
140
140
159
159
159
51.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
3
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 25mm40mm
1450 rpm
DIN 24 255NT 25-200
10% 15%20%
25%27%
27%
0 1 2 3 4 5 6 7Q (m3/hr)
HEAD
(m)
4
8
12
16
P (k
W)
0.0
0.2
0.4
0.6
0.8
NPSH
(m)
0
2
4
6
160
160
160
180
180
190
190
190
198
198
205
205
205
29.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
4
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 25mm40mm
1450 rpm
DIN 24 255NT 2/25-200
10% 15%20%
23%
23%
25%
25%
27%
27%
28%
28%
9630Q (m3/hr)
HEAD
(m)
5
10
15
20
25
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPSH
(m)
1.00
1.20
1.40
1.60
145
145
145
165
165
165
185
185
185
205
205
205
29.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
5
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 32mm50mm
1450 rpm
DIN 24 255NT 32-160
30% 42%
42%
50%
50%
55%
55%
58%
58%
0 5 10 15 20 25Q (m3/hr)
HEAD
(m)
1
2
3
4
5
6
7
8
9
10
11
12
P (k
W)
0.0
0.2
0.4
0.6
0.8
1.0
NPSH
(m)
0
1
2
3
4
125
125
125
140
140
160
160
170
170
170
61.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
6
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 32mm50mm
1450 rpm
DIN 24 255NT 32-200
30% 40%
40%
47%
47%
50%
50%
0 4 8 12 16 20Q (m3/hr)
HEAD
(m)
4
6
8
10
12
14
16
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPSH
(m)
0.0
0.5
1.0
1.5
2.0
2.5
160
160
160
175
175
195
195
205
205
205
54.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
7
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 32mm50mm
1450 rpm
DIN 24 255NT/NS 2/32-200
30%35%
35%
40%
40%
45%
45%
47%
47%
02510150Q (m3/hr)
HEAD
(m)
5
10
15
20
25
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPSH
(m)
0
1
2
3
145
145
165
165
185
185
205
205
205
48.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
8
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 40mm65mm
1450 rpm
DIN 24 255NT/NS 40-160
40% 50%
50%
55%
55%
60%
60%
63%
63%
65%
65%
040302010Q (m3/hr)
HEAD
(m)
0
2
4
6
8
10
12
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPSH
(m)
0
1
2
3
125
125
125
145
145
145
158
158
158
170
170
170
66.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
9
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 40mm65mm
1450 rpm
DIN 24 255NT/NS 40-200
35% 45% 50%
50%
54%
54%
58%
58%
60%
60%
0 5 10 15 20 25 30Q (m3/hr)
HEAD
(m)
4
6
8
10
12
14
16
18
P (k
W)
0.0
0.4
0.8
1.2
1.6
2.0
NPSH
(m)
0
1
2
3
4
160
160
160
178
178
195
195
205
205
205
62.5%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
10
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30%
30%
40%
40%
45%
45%
50%
50%
55%
55%
0 5 10 15 20 25 30 35 40Q (m3/hr)
HEAD
(m)
0
5
10
15
20
25
P (k
W)
0
1
2
3
NPSH
(m)
0
2
4
6
8
10
200
200
200
225
225
225
250
250
250
60.0%
Safety margin of 0,5 m necessary
40mm65mm
1450 rpm
DIN 24 255NT/NS 40-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
11
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30%
30%
40%
40%
45%
45%
50%
50%
54%
54%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
5
10
15
20
25
30
35
40
P (k
W)
0
2
4
6
NPSH
(m)
0.0
0.5
1.0
1.5
2.0
2.5
175
175
195
195
215
215
235
235
256
256
256
56.0%
Safety margin of 0,5 m necessary
40mm65mm
1450 rpm
DIN 24 255NT/NS 2/40-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
12
30% 42% 52% 60%
60%
65%
65%
68%
68%
70%
70%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
2
4
6
8
10
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPSH
(m)
0
1
2
3
125
125
125
138
138
153
153
165
165
165
71.0%
Safety margin of 0,5 m necessary
50mm65mm
1450 rpm
DIN 24 255NT/NS 50-160
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
13
35% 45% 53% 60%
60%
64%
64%
68%
68%
70%
70%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
5
10
15
20
P (k
W)
0.0
0.5
1.0
1.5
2.0
2.5
NPSH
(m)
0
1
2
3
4
160
160
160
178
178
191
191
205
205
205
71.0%
Safety margin of 0,5 m necessary
50mm65mm
1450 rpm
DIN 24 255NT/NS 50-200
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
14
35% 45% 55% 60%
60%
63%
63%
65%
65%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
5
10
15
20
25
P (k
W)
0
1
2
3
4
5
NPSH
(m)
0
1
2
3
4
5
200
200
200
220
220
235
235
250
250
250
67.0%
Safety margin of 0,5 m necessary
50mm65mm
1450 rpm
DIN 24 255NT/NS 50-250
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
15
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40%
40%
45%
45%
50%
50%
55%
55%
58%
58%
60%
60%
0 10 20 30 40 50 60Q (m3/hr)
HEAD
(m)
0
10
20
30
40
P (k
W)
0
2
4
6
NPSH
(m)
0
1
2
3
4
175
175
195
195
215
215
235
235
256
256
256
61.0%
Safety margin of 0,5 m necessary
50mm65mm
1450 rpm
DIN 24 255NT/NS 2/50-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
16
40% 50%
50%
60%
60%
65%
65%
70%
70%
0 10 20 30 40 50 60 70 80 90Q (m3/hr)
HEAD
(m)
1.0
1.9
2.8
3.7
4.6
5.5
6.4
7.3
8.2
9.1
10.0
P (k
W)
0.0
0.4
0.8
1.2
1.6
2.0
NPSH
(m)
0
2
4
6
8
10
125
125
125
135
135
135
145
145
145
160
160
160
170
170
170
72.0%
Safety margin of 0,5 m necessary
65mm80mm
1450 rpm
DIN 24 255NT/NS 65-160
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
17
40% 50% 60% 65%70%
70%
72%
72%
0 10 20 30 40 50 60 70Q (m3/hr)
HEAD
(m)
5
10
15
P (k
W)
0
1
2
3
NPSH
(m)
0
1
2
3
4
160
160
160
178
178
194
194
205
205
205
73.0%
Safety margin of 0,5 m necessary
65mm80mm
1450 rpm
DIN 24 255NT/NS 65-200
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
18
50%
50%
60%
60%
65%
65%
68%
68%
051001050Q (m3/hr)
HEAD
(m)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
P (k
W)
0
2
4
6
8
10
NPSH
(m)
0
4
8
12
16
200
200
200
225
225
225
240
240
240
250
250
250
265
265
265
71.5%
Safety margin of 0,5 m necessary
65mm80mm
1450 rpm
DIN 24 255NT/NS 65-250
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
19
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 40%
40%
50%
50%
55%
55%
60%
60%
62%
62%
65%
65%
0 20 40 60 80 100 120Q (m3/hr)
HEAD
(m)
0
10
20
30
40
P (k
W)
0
4
8
12
16
NPSH
(m)
0
2
4
6
8
10
270
270
270
290
290
310
310
320
320
330
330
330
67.0%
Safety margin of 0,5 m necessary
65mm80mm
1450 rpm
DIN 24 255NT/NS 65-315
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
20
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40%
40%
50%
50%
53%
53%
55%
55%
30%
30%
0 10 20 30 40 50 60 70 80 90 100 110Q (m3/hr)
HEAD
(m)
10
20
30
40
50
60
70
P (k
W)
0
5
10
15
20
25
NPSH
(m) 8
10
330
330
330
350
350
350
370
370
370
390
390
390
410
410
410
56.1%
Safety margin of 0,5 m necessary
65mm80mm
1450 rpm
DIN 24 255NT/NS 65-400
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
21
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50%
50%
60%
60%
70%
70%
75%
75%
78%
78%
0 10 20 30 40 50 60 70 80 90 100 110 120 130Q (m3/hr)
HEAD
(m)
1
2
3
4
5
6
7
8
9
10
11
P (k
W)
0
1
2
3
NPSH
(m)
0
4
8
12
125
125
125
140
140
140
160
160
160
170
170
170
180
180
180
80.5%
Safety margin of 0,5 m necessary
80mm100mm
1450 rpm
DIN 24 255NT/NS 80-160
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
22
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40%
40%
50%
50%
60%
60%
65%
65%
70%
70%
051001050Q (m3/hr)
HEAD
(m)
2
4
6
8
10
12
14
16
P (k
W)
0
2
4
6
NPSH
(m)
0
2
4
6
8
10
170
170
170
185
185
200
200
210
210
210
73.0%
Safety margin of 0,5 m necessary
80mm100mm
1450 rpm
DIN 24 255NT/NS 80-200
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
23
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40%
40%
50%
50%
60%
60%
65%
65%
70%
70%
72%
72%
0 40 80 120 160 200Q (m3/hr)
HEAD
(m)
4
8
12
16
20
24
28
P (k
W)
0
4
8
12
16
NPSH
(m)
0
4
8
12
16
200
200
200
225
225
225
245
245
245
265
265
265
75.0%
Safety margin of 0,5 m necessary
80mm100mm
1450 rpm
DIN 24 255NT/NS 80-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
24
CHARACTERISTIC CURVE
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
Discharge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50%
50%
60%
60%
70%
70%
73%
73%
74%
74%
0 20 40 60 80 100 120 140 160 180Q (m3/hr)
HEAD
(m)
5
10
15
20
25
30
35
40
P (k
W)
0
4
8
12
16
20
NPSH
(m)
0
4
8
12
270
270
270
280
280
280
290
290
290
300
300
300
310
310
310
320
320
320
330
330
330
75.0%
Safety margin of 0,5 m necessary
80mm100mm
1450 rpm
DIN 24 255NT/NS 80-315
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
25
CHARACTERISTIC CURVE
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
Discharge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 55%
55%
60%
60%
63%
63%
65%
65%
67%
67%
002051001050Q (m^3/hr)
HEAD
(m)
10
20
30
40
50
60
P (k
W)
0
10
20
30
40
NPSH
(m)
0
4
8
12
330
330
330
350
350
370
370
370
390
390
409
409
409
68.0%
Safety margin of 0,5 m necessary
80mm100mm
1450 rpm
DIN 24 255NT/NS 80-400
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
26
CHARACTERISTIC CURVE
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
Discharge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
1450 rpm
40%
40%
50%
50%
60%
60%
70%
70%
80%
80%
0 50 100 150 200 250Q (m^3/hr)
HEAD
(m)
0
2
4
6
8
10
12
14
16
P (k
W)
0
2
4
6
8
NPSH
(m)
0
4
8
12
170
170
170
180
180
180
190
190
190
200
200
200
210
210
210
215
215
215
85.0%
Safety margin of 0,5 m necessary
100mm125mm
DIN 24 255NT/NS 100-200
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
27
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60%
60%
70%
70%
75%
75%
80%
80%
0 50 100 150 200 250Q (m3/hr)
HEAD
(m)
0
5
10
15
20
25
P (k
W)
0
4
8
12
16
NPSH
(m)
0
2
4
6
8
10
205
205
205
220
220
220
240
240
240
260
260
260
81.7%
Safety margin of 0,5 m necessary
100mm125mm
1450 rpm
DIN 24 255NT/NS 100-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
28
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50%
50%
60%
60%
65%
65%
70%
70%
75%
75%
0 50 100 150 200 250 300Q (m3/hr)
HEAD
(m)
5
10
15
20
25
30
35
40
45
P (k
W)
0
10
20
30
NPSH
(m)
0
2
4
6
8
10
270
270
270
290
290
290
310
310
310
330
330
330
78.5%
Safety margin of 0,5 m necessary
100mm125mm
1450 rpm
DIN 24 255NT/NS 100-315
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
29
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 40% 50% 60%
60%
65%
65%
70%
70%
0 50 100 150 200 250 300Q (m3/hr)
HEAD
(m)
20
30
40
50
60
P (k
W)
0
10
20
30
40
NPSH
(m)
0
2
4
6
8
350
350
350
370
370
390
390
409
409
409
72.5%
Safety margin of 0,5 m necessary
100mm125mm
1450 rpm
DIN 24 255NT/NS 100-400
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
30
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50%
50%
60%
60%
70%
70%
80%
80%
0040030020010Q (m3/hr)
HEAD
(m)
0
5
10
15
20
25
30
P (k
W)
0
5
10
15
20
25
NPSH
(m)
0
4
8
12
200
200
200
230
230
230
250
250
250
270
270
270
85.0%
Safety margin of 0,5 m necessary
125mm150mm
1450 rpm
DIN 24 255NT/NS 125-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
31
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50%
50%
60%
60%
70%
70%
75%
75%
80%
80%
0040030020010Q (m3/hr)
HEAD
(m)
10
20
30
40
P (k
W)
0
10
20
30
40
NPSH
(m)
0
2
4
6
8
270
270
270
290
290
310
310
328
328
328
84.0%
Safety margin of 0,5 m necessary
125mm150mm
1450 rpm
DIN 24 255NT/NS 125-315
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
32
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60%
60%
65%
65%
70%
70%
73%
73%
75%
75%
0 50 100 150 200 250 300 350 400 450Q (m3/hr)
HEAD
(m)
10
20
30
40
50
60
P (k
W)
0
20
40
60
NPSH
(m)
0
4
8
12
330
330
350
350
370
370
390
390
408
408
77.0%
Safety margin of 0,5 m necessary
125mm150mm
1450 rpm
DIN 24 255NT/NS 125-400
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
33
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 1988 125mm150mm
1450 rpm
DIN 24 255NT/NS 125-400/1
40% 50% 60% 65% 70%
70%
73%
73%
75%
75%
77%
77%
0 100 200 300 400Q (m3/hr)
HEA
D (m
)
20
30
40
50
60
70
P (k
W)
0
20
40
60
80
NPS
H (m
)
0
2
4
6
8
330
330
330
360
360
360
390
390
390
405
405
405
420
420
420
77.4%
Safety margin of 0,5 m necessary
34
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 60% 70%
70%
75%
75%
80%
80%
0 100 200 300 400 500 600Q (m3/hr)
HEAD
(m)
5
10
15
20
25
P (k
W)
0
10
20
30
NPSH
(m)
0
2
4
6
8
10
*228 (220)
228
228
*245 (240)
245
260
260
280
280
280
82.1%
Safety margin of 0,5 m necessary
150mm200mm
1450 rpm
DIN 24 255NT/NS 150-250
*Shroud Ø (Reduced Vane Ø)
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
35
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60% 70%
70%
75%
75%
80%
80%
82%
82%
0 100 200 300 400 500 600Q (m3/hr)
HEAD
(m)
10
15
20
25
30
35
40
P (k
W)
0
10
20
30
40
50
NPSH
(m)
0
2
4
6
8
270
270
290
290
310
310
328
328
328
82.5%
Safety margin of 0,5 m necessary
150mm200mm
1450 rpm
DIN 24 255NT/NS 150-315
36
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 60% 70%
70%
75%
75%
80%
80%
82%
82%
0 100 200 300 400 500 600 700Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
P (k
W)
0
40
80
120
NPSH
(m)
0
2
4
6
8
10
350
350
350
370
370
370
400
400
400
420
420
420
83.3%
Safety margin of 0,5 m necessary
150mm200mm
1450 rpm
DIN 24 255NT/NS 150-400/1
37
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 200mm200mm
1450 rpm
DIN 24 255NT/NS 200-250
40% 50% 60%70%
75%78%
78%
80%
80%
0 100 200 300 400 500 600 700Q (m3/hr)
HEAD
(m)
8
12
16
20
24
28
P (k
W)
0
10
20
30
40
NPSH
(m)
0
2
4
6
8
10
250
250
250
270
270
290
290
290
81.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
38
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60% 70%
70%
75%
75%
80%
80%
0 200 400 600 800 1000Q (m3/hr)
HEAD
(m)
10
14
18
22
26
30
34
38
42
P (k
W)
0
20
40
60
80
NPSH
(m)
0
2
4
6
8
*268 (253)
268
268
280
280
280
300
300
300
320
320
320
340
340
340
85.0%
Safety margin of 0,5 m necessary
200mm250mm
1450 rpm
DIN 24 255NT/NS 200-315
*Shroud Ø (Reduced Vane Ø)
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
39
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
35% 50% 60% 68% 75%
75%
80%
80%
0 100 200 300 400 500 600 700 800 900Q (m3/hr)
HEAD
(m)
0
10
20
30
40
50
60
70
P (k
W)
0
40
80
120
NPSH
(m)
0
2
4
6
8
10
300
300
300
350
350
350
385
385
385
420
420
420
83.0%
Safety margin of 0,5 m necessary
200mm250mm
1450 rpm
DIN 24 255NT/NS 200-400
40
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60%70%
70%
75%
75%
81%
81%
0 200 400 600 800 1000 1200 1400Q (m3/hr)
HEAD
(m)
10
20
30
40
50
P (k
W)
0
40
80
120
NPSH
(m)
0
4
8
12
*311 (291)
311
311
*322 (315)
322
335
335
355
355
355
84.0%
Safety margin of 0,5 m necessary
250mm300mm
1450 rpm
DIN 24 255NT/NS 250-315
*Shroud Ø (Reduced Vane Ø)
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
41
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50%
50%
60%
60%
65%
65%
70%
70%
75%
75%
80%
80%
0 200 400 600 800 1000 1200 1400Q (m3/hr)
HEAD
(m)
0
10
20
30
40
50
60
70
P (k
W)
0
40
80
120
160
NPSH
(m)
0
2
4
6
8
*300 (290)
300
*320 (310)
320
*340 (335)
340
360
360
380
380
400
400
420
420
420
82.5%
Safety margin of 0,5 m necessary
*Shroud Ø (Reduced Vane Ø)
250mm300mm
1450 rpm
DIN 24 255NT/NS 250-400
42
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30%40%
45%
45%
50%
50%
52%
52%
0 2 4 6 8 10 12 14 16 18Q (m3/hr)
HEAD
(m)
5
10
15
20
25
30
35
P (k
W)
0.0
0.4
0.8
1.2
1.6
2.0
NPSH
(m)
0
2
4
6
8
125
125
140
140
159
159
159
53.0%
Safety margin of 0,5 m necessary
25mm25mm
2900 rpm
DIN 24 255NT 25-160
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
43
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
10% 15% 20%24%
27%
27%
29%
29%
32%
32%
0 2 4 6 8 10 12Q (m3/hr)
HEAD
(m)
20
30
40
50
60
P (k
W)
0
1
2
3
4
5
NPSH
(m)
0.0
0.5
1.0
1.5
2.0
2.5
160
160
160
175
175
185
185
185
192
192
199
199
205
205
205
33.0%
Safety margin of 0,5 m necessary
25mm40mm
2900 rpm
DIN 24 255NT 25-200
44
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
10%15%
20%25%
25%
28%
28%
30%
30%
31%
31%
0 2 4 6 8 10 12 14 16 18Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
80
90
100
P (k
W)
0
2
4
6
8
NPSH
(m)
0
1
2
3
4
145
145
145
165
165
165
185
185
185
205
205
205
32.0%
Safety margin of 0,5 m necessary
25mm40mm
2900 rpm
DIN 24 255NT/NS 2/25-200
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
45
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 32mm50mm
2900 rpm
DIN 24 255NT/NS 32-160
30% 42%
42%
50%
50%
55%
55%
60%
60%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
0
10
20
30
40
50
P (k
W)
0
2
4
6
8
NPSH
(m)
0
2
4
6
8
10
125
125
125
140
140
160
160
170
170
170
63.5%
Safety margin of 0,5 m necessary
46
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 32mm50mm
2900 rpm
DIN 24 255NT/NS 32-200
30% 40% 45%
45%
50%
50%
55%
55%
0 10 20 30 40 50Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
P (k
W)
0
2
4
6
8
10
NPSH
(m)
0
2
4
6
160
160
160
175
175
195
195
205
205
205
57.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
47
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 35%
35%
40%
40%
43%
43%
45%
45%
47%
47%
040302010Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
80
90
P (k
W)
0
4
8
12
NPSH
(m)
0
2
4
6
8
145
145
165
165
185
185
205
205
205
50.0%
Safety margin of 0,5 m necessary
32mm50mm
2900 rpm
DIN 24 255NT/NS 2/32-200
48
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
35% 47% 55%
55%
60%
60%
65%
65%
67%
67%
0 8 16 24 32 40 48 56 64 72Q (m3/hr)
HEAD
(m)
4
8
12
16
20
24
28
32
36
40
44
48
P (k
W)
0
2
4
6
8
10
NPSH
(m)
0
2
4
6
8
125
125
125
145
145
145
158
158
158
170
170
170
68.0%
Safety margin of 0,5 m necessary
40mm65mm
2900 rpm
DIN 24 255NT/NS 40-160
49
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 40mm65mm
2900 rpm
DIN 24 255NT/NS 40-200
35% 45% 50% 56%
56%
60%
60%
63%
63%
0 10 20 30 40 50 60Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
P (k
W)
0
4
8
12
16
NPSH
(m)
0
2
4
6
8
160
160
160
178
178
195
195
205
205
205
65.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
50
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 40mm65mm
2900 rpm
DIN 24 255NT/NS 40-250
30% 40% 45%
45%
50%
50%
55%
55%
60%
60%
0 10 20 30 40 50 60 70Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
80
90
100
P (k
W)
0
5
10
15
20
25
NPSH
(m)
0
2
4
6
8
10
200
200
200
225
225
225
250
250
250
62.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
51
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 40%
40%
45%
45%
50%
50%
55%
55%
0 10 20 30 40 50 60 70 80 90Q (m3/hr)
HEAD
(m)
20
40
60
80
100
120
140
160
P (k
W)
0
10
20
30
40
50
NPSH
(m)
0
2
4
6
8
10
175
175
195
195
215
215
235
235
256
256
256
57.0%
Safety margin of 0,5 m necessary
40mm65mm
2900 rpm
DIN 24 255NT/NS 2/40-250
52
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 45% 55% 60% 65%
65%
69%
69%
72%
72%
0 10 20 30 40 50 60 70 80 90Q (m3/hr)
HEAD
(m)
8
12
16
20
24
28
32
36
40
44
P (k
W)
0
2
4
6
8
10
NPSH
(m)
0
2
4
6
8
125
125
125
138
138
153
153
165
165
165
73.0%
Safety margin of 0,5 m necessary
50mm65mm
2900 rpm
DIN 24 255NT/NS 50-160
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
53
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
35% 50% 61%
61%
65%
65%
69%
69%
72%
72%
0 10 20 30 40 50 60 70 80 90 100Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
P (k
W)
0
4
8
12
16
20
NPSH
(m)
0
2
4
6
8
160
160
160
178
178
191
191
205
205
205
73.0%
Safety margin of 0,5 m necessary
50mm65mm
2900 rpm
DIN 24 255NT/NS 50-200
54
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
30% 40% 50% 57% 62% 65%
65%
68%
68%
0 10 20 30 40 50 60 70 80 90 100Q (m3/hr)
HEAD
(m)
30
40
50
60
70
80
90
100
P (k
W)
0
10
20
30
40
NPSH
(m)
0
2
4
6
8
10
200
200
200
220
220
235
235
250
250
250
69.0%
Safety margin of 0,5 m necessary
50mm65mm
2900 rpm
DIN 24 255NT/NS 50-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
55
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 50mm65mm
2900 rpm
DIN 24 255NT/NS 2/50-250
40%
40%
45%
45%
50%
50%
55%
55%
60%
60%
0 20 40 60 80 100 120Q (m3/hr)
HEAD
(m)
0
20
40
60
80
100
120
140
160
P (k
W)
0
10
20
30
40
50
NPSH
(m)
0
4
8
12
16
175
175
195
195
215
215
235
235
256
256
256
62.0%
Safety margin of 0,5 m necessary
56
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 65mm80mm
2900 rpm
DIN 24 255NT/NS 65-160
40% 50% 60%
60%
65%
65%
70%
70%
75%
75%
051001050Q (m3/hr)
HEAD
(m)
0
10
20
30
40
P (k
W)
0
4
8
12
16
NPSH
(m)
0
2
4
6
8
125
125
125
140
140
140
160
160
160
170
170
170
80.0%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
57
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
35% 45% 55% 65% 70%
70%
73%
73%
0 25 50 75 100 125 150Q (m3/hr)
HEAD
(m)
20
24
28
32
36
40
44
48
52
56
60
P (k
W)
0
5
10
15
20
25
NPSH
(m)
0
2
4
6
8
160
160
160
178
178
194
194
205
205
205
75.0%
Safety margin of 0,5 m necessary
65mm80mm
2900 rpm
DIN 24 255NT/NS 65-200
58
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 65mm80mm
2900 rpm
DIN 24 255NT/NS 65-250
50% 60%
60%
65%
65%
70%
70%
0 20 40 60 80 100 120 140 160 180 200 220 240Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
80
90
100
110
P (k
W)
0
20
40
60
80
NPSH
(m)
0
4
8
12
16
200
200
200
225
225
225
240
240
240
250
250
250
265
265
265
73.5%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
59
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
50% 60%
60%
70%
70%
75%
75%
78%
78%
0 20 40 60 80 100 120 140 160 180 200 220 240Q (m3/hr)
HEAD
(m)
0
4
8
12
16
20
24
28
32
36
40
44
P (k
W)
0
5
10
15
20
25
NPSH
(m)
0
4
8
12
16
125
125
125
140
140
140
160
160
160
170
170
170
180
180
180
80.0%
Safety margin of 0,5 m necessary
80mm100mm
2900 rpm
DIN 24 255NT/NS 80-160
60
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 60% 65%
65%
70%
70%
75%
75%
0 50 100 150 200 250Q (m3/hr)
HEAD
(m)
10
20
30
40
50
60
70
P (k
W)
0
10
20
30
40
NPSH
(m)
0
4
8
12
170
170
170
185
185
200
200
210
210
210
80.0%
Safety margin of 0,5 m necessary
80mm100mm
2900 rpm
DIN 24 255NT/NS 80-200
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
61
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 55% 60% 65%70%
70%
72%
72%
0 40 80 120 160 200 240 280Q (m3/hr)
HEAD
(m)
20
40
60
80
100
120
P (k
W)
0
20
40
60
80
NPSH
(m)
0
4
8
12
200
200
200
225
225
225
245
245
245
265
265
265
75.0%
Safety margin of 0,5 m necessary
80mm100mm
2900 rpm
DIN 24 255NT/NS 80-250
62
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005 100mm125mm
2900 rpm
DIN 24 255NT/NS 100-200
40% 50% 60%
60%
70%
70%
75%
75%
80%
80%
0 50 100 150 200 250 300 350Q (m3/hr)
HEAD
(m)
0
10
20
30
40
50
60
P (k
W)
0
20
40
60
NPSH
(m)
0
4
8
12
170
170
170
180
180
180
190
190
190
200
200
200
210
210
210
215
215
215
81.2%
Safety margin of 0,5 m necessary
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
63
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40% 50% 60% 70%
70%
75%
75%
0040030020010Q (m3/hr)
HEAD
(m)
20
30
40
50
60
70
80
90
100
P (k
W)
0
20
40
60
80
100
NPSH
(m)
0
4
8
12
205
205
205
220
220
220
240
240
240
260
260
260
76.6%
Safety margin of 0,5 m necessary
100mm125mm
2900 rpm
DIN 24 255NT/NS 100-250
EN733 (DIN 24255)END-SUCTION CENTRIFUGAL PUMPS
64
1973 Annex BBased on water density 1000 kg/m3 and viscosity 1 cSt.
CHARACTERISTIC CURVEDischarge Diameter
Head, capacity and efficiency according to ISO Standard 2548:
Issue Date Suction DiameterOCTOBER 2005
40%
40%
50%
50%
60%
60%
65%
65%
70%
70%
0 100 200 300 400 500 600 700Q (m3/hr)
HEAD
(m)
0
10
20
30
40
50
60
70
P (k
W)
0
20
40
60
80
NPSH
(m)
0
10
20
30
*185 (180)
185
185
200
200
220
220
220
74.0%
Safety margin of 0,5 m necessary
125mm150mm
2900 rpm
DIN 24 255NT/NS 125-250
*Shroud Ø (Reduced Vane Ø)
Centrifugal and Axial Flow Pump Affinity Laws:
Speed changes & impeller diameter remains the same:
Q1/Q2 = N1/N2
H1/H2 = (N1/N2)²
P1/P2 = (N1/N2)³
Impeller diameter changes and speed remains the same:
Q1/Q2 = D1/D2
H1/H2 = (D1/D2)²
P1/P2 = (D1/D2)³
BASIC FORMULAS Q = Flow(m³/h)H= Head(m) Density = SGEff = Pump Eff%
Capacity
l/sec x 3.6 = m³/h m³/h ÷ 3.6 = l/sec
US gpm ÷ 0.246 = l/min l/min x 0.246 = US gpm
Imp gpm x 0.2271 = m³/h m³/h x 4.403 = Imp gpm
10000 kg/hr =10m³h
Density(SG)
Head/Pressure
Ft ÷ 3.28 = m m x 3.28048 = Ft
m x 9.805 = kpa kpa x 0.102 = m
m x 1.45 = psi
Bar x 10.19 = m
Bar x 100 = kpa
m x 0.098 = Bar
psi x 6.895 = kpa
Efficiency
EFF(%) = Q x H x SG
367 x kw(abs)
Q x H x SG367 x Eff(%)
Power
hp x 0.746 = kw kw x 1.340483 = hp
kw abs =
Hz x 120No of Poles
RPM =
RPM x No Of Poles120
Hz =
Q x 353.63(Pipe Dia)²
Velocity m/sec =
Amps x Volts x Power Factor x 1.7321000
kw =
Temperature
Deg.C = (deg.F-32) x 0.556
Deg.F = (1.8 x deg.C) + 32
imp.dia.(mm) x π x N(Rpm)60 x 1000
Peripheral Speed
Peripheral Speed(Impeller) =
QvisCQ
Qw =
C% x %wQw =
Qvis x Hvis x Pvis367 x Eff(%) vis
Pvis =
HvisCH
Hw =
Viscosity
vis Viscous Liquid
w Water
Given: Qvis in m³/h
Hvis in m
kinematic viscosity v in mm²/s
pvis in kg/dm³
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