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ANSI - CURVE BOOKCHEMICAL PROCESS PUMPS
Version 1 - ANSI 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
1
ANSIHEAVY-DUTY PROCESS PUMPS
TOMBSTONE CURVES
11/2 x 3-13 2 x 3-13
2 x 3-103 x 4-10
1 1/2 x 3-10
1 x 2-10
2 x 3-8
3 x 4-7
3 x 4-13
1 x 11/2-8
11/2 x 3-8
1 1/2 x 3-62 x 3-61 x 11/2-6
3 x 4-8G3 x 4-8
0
10
20
30
40
50
60
70
80
90100
150
BEST EFFICIENCY POINT SHOWN
FLOW RATE [m3/h]
10 20 40 60 80 100 150 200 250
FLOW RATE [m3/h]
10 20 40 60 80 100 150 200 300 400 500 600 800 1000
10
20
30
40
50
3 x 4 -13
6 x 8-15
4 x 6-13
6 x 8-13
8 x 10-13
8 x 10-15 G
4 x 6-10
2 x 3 -131 x 3 -13
3 x 4 -102 x 3-10
3 x 4 - 83 x 4 - 8 G
1 x 2-10
8 x 10-15
2 x 3-6
2 x 3-8
1 x 3-6 1/2
1 x 3-8
1/2
1 x 3-10
1/2
1x 1 -81/2
1 x 1 - 61/2
1/2
HE
AD
[m]
HE
AD
[m]
2900 rpm
1450 rpm Pg. no.
1x1½-6 2 241x1½-8 3 251½x3-6 4 261½x3-8 5 271½x3-10 6 281½x3-13 7 291x2-10 8 302x3-6 9 312x3-8 10 322x3-10 11 332x3-13 12 343x4-8G 13 353x4-8 14 363x4-10 15 373x4-13 16 4x6-10 17 4x6-13 18 6x8-13 196x8-15 208x10-13 218x10-15G 228x10-15 23
Size*
ANSIHEAVY-DUTY PROCESS 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 1”1 ½”
1450 rpm
ANSI 3431 x 1½ - 6
35%40%
40%
44%
44%
46%
46%
48%
48%
49%
49%
0 2 4 6 8 10 12 14 16Q (m3/hr)
HEA
D (m
)
2
4
6
8
10
P (k
W)
0.0
0.1
0.2
0.3
0.4
0.5
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
2.0
5"
5"
5.5"
5.5"
6.06"
6.06"
49.3%
5"5.5"
6.06"
3
ANSIHEAVY-DUTY PROCESS 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 1”1 ½”
1450 rpm
ANSI 3431 x 1½ - 8
30% 40%45%
45%
50%
50%
53%
53%
0 5 10 15 20 25Q (m3/hr)
HEA
D (m
)
2
4
6
8
10
12
14
16
18
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPS
H (m
)
0
2
4
6
8
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
55.6%
5.5"6"
6.5"7"
7.5"
8"
ANSIHEAVY-DUTY PROCESS 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 1½”3”
1450 rpm
ANSI 3431½ x 3 - 6
40% 45% 50%
50%
55%
55%
58%
58%
60%
60%
0 5 10 15 20 25Q (m3/hr)
HEA
D (m
)
2
4
6
8
10
P (k
W)
0.0
0.2
0.4
0.6
0.8
NPS
H (m
)
0.0
0.2
0.4
0.6
0.8
1.0
5"
5"
5.5"
5.5"
6.06"
6.06"
60.6%
5"
5.5"
6.06"
5
ANSIHEAVY-DUTY PROCESS 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 1½”3”
1450 rpm
ANSI 3431½ x 3 - 8
40%
40%
45%
45%
50%
50%
54%
54%
57%
57%
0 5 10 15 20 25 30Q (m3/hr)
HEA
D (m
)
2
4
6
8
10
12
14
16
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
2.0
5"
5"
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
58.8%
5" 5.5"
6"6.5"
7"
7.5"
8"
ANSIHEAVY-DUTY PROCESS 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 1½”3”
1450 rpm
ANSI 4951½ x 3 - 10
42%
42%
48%
48%
52%
52%
55%
55%
57%
57%
59%
59%
0 5 10 15 20 25 30 35 40Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
P (k
W)
0
1
2
3
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
60.5%
6"
7"8"
9"
10"
7
ANSIHEAVY-DUTY PROCESS 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 1½”3”
1450 rpm
ANSI 4951½ x 3 - 13
40%45%
50%54%
54%
56%57%
58%
0 10 20 30 40 50 60Q (m3/hr)
HEA
D (m
)
10
15
20
25
30
35
40
P (k
W)
0
2
4
6
8
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
56.0%
9"10"
11"
12"
13"
ANSIHEAVY-DUTY PROCESS 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 1”2”
1450 rpm
ANSI 4951 x 2 - 10
30% 35%
35%
37%
37%
40%
40%
42%
42%
0 2 4 6 8 10 12 14 16 18 20Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
P (k
W)
0.0
0.5
1.0
1.5
2.0
2.5
NPS
H (m
)
0.00
0.20
0.40
0.60
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
42.6%
6"
7"
8"
9"
10"
9
ANSIHEAVY-DUTY PROCESS 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 2”3”
1450 rpm
ANSI 3432 x 3 - 6
45%55%
55%
60%
60%
64%
64%
0 10 20 30 40 50Q (m3/hr)
HEA
D (m
)
2
3
4
5
6
7
8
9
10
P (k
W)
0.0
0.4
0.8
1.2
1.6
NPS
H (m
)
0
1
2
3
4
5
5"
5"
5.5"
5.5"
6.06"
6.06"
67.3%
5"5.5"
6.06"
ANSIHEAVY-DUTY PROCESS 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 2”3”
1450 rpm
ANSI 4952 x 3 - 8
40% 45%
45%
50%
50%
55%
55%
58%
58%
0 5 10 15 20 25 30 35Q (m3/hr)
HEA
D (m
)
4
6
8
10
12
14
16
18
P (k
W)
0.0
0.4
0.8
1.2
1.6
2.0
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
8.38"
8.38"
60.1%
5.5"6"
6.5"7"
7.5"
8"8.38"
11
ANSIHEAVY-DUTY PROCESS 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 2”3”
1450 rpm
ANSI 4952 x 3 - 10
50% 55%
55%
60%
60%
0 10 20 30 40 50 60Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
P (k
W)
0
1
2
3
4
5
NPS
H (m
)
0
1
2
3
4
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
61.7%
6"
7"
8"
9"
10"
ANSIHEAVY-DUTY PROCESS PUMPS
12
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 2”3”
1450 rpm
ANSI 4952 x 3 - 13
56%
56%
59%
59%
61%
61%
63%
63%
65%
0 10 20 30 40 50 60 70 80 90 100 110Q (m3/hr)
HEA
D (m
)
5
10
15
20
25
30
35
40
P (k
W)
0
4
8
12
NPS
H (m
)
0
1
2
3
4
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
63.5%
9"
10"
11"
12"
13"
13
ANSIHEAVY-DUTY PROCESS 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 3”4”
1450 rpm
ANSI 4953 x 4 - 8G
40%
50%
50%
58%
58%
63%
63%
68%
68%
71%
71%
73%
73%
0 10 20 30 40 50 60 70 80 90 100Q (m3/hr)
HEA
D (m
)
0
2
4
6
8
10
12
14
16
18
P (k
W)
0
1
2
3
4
NPS
H (m
)
0
1
2
3
5.5"
5.5"
5.5"
6"
6"
6"
6.5"
6.5"
6.5"
7"
7"
7"
7.5"
7.5"
7.5"
8"
8"
8"
8.38"
8.38"
8.38"
74.0%
ANSIHEAVY-DUTY PROCESS PUMPS
14
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 3”4”
1450 rpm
ANSI 4953 x 4 - 8
55% 60%
60%
65%
65%
70%
70%
73%
73%
75%
75%
76%
76%
0 10 20 30 40 50 60 70 80 90 100 110 120 130Q (m3/hr)
HEA
D (m
)
0
2
4
6
8
10
12
14
16
18
20
P (k
W)
0
1
2
3
4
5
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
2.0
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
8.38"
8.38"
76.2%
6"6.5"
7"
7.5"
8"8.38"
15
ANSIHEAVY-DUTY PROCESS 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 3”4”
1450 rpm
ANSI 4953 x 4 - 10
50% 55% 60%
60%
65%
65%
68%
68%
69%
69%
0 10 20 30 40 50 60 70 80Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
P (k
W)
0
2
4
6
NPS
H (m
)
0.0
0.4
0.8
1.2
1.6
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
70.2%
6"7"
8"
9"
10"
ANSIHEAVY-DUTY PROCESS PUMPS
16
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 3”4”
1450 rpm
ANSI 4953 x 4 - 13
55% 60%65%
70%
70%
72%
72%
73%
73%
0 20 40 60 80 100 120 140 160 180Q (m3/hr)
HEA
D (m
)
10
15
20
25
30
35
40
45
P (k
W)
0
4
8
12
16
20
NPS
H (m
)
0
1
2
3
4
5
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
73.5%
9"
10"
11"
12"
13"
17
ANSIHEAVY-DUTY PROCESS 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 4”6”
1450 rpm
ANSI 4954 x 6 - 10
50% 60% 65% 70%
70%
74%
74%
76%
76%
78%
78%
0 20 40 60 80 100 120 140 160 180 200 220 240 260Q (m3/hr)
HEA
D (m
)
5
10
15
20
25
P (k
W)
0
4
8
12
16
NPS
H (m
)
0
1
2
3
8"
8"
8.5"
8.5"
9"
9"
9.5"
9.5"
10"
10"
78.6%
8"8.5"
9"9.5"
10"
ANSIHEAVY-DUTY PROCESS PUMPS
18
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 4”6”
1450 rpm
ANSI 4954 x 6 - 13
60%
60%
65%
65%
70%
70%
75%
75%
78%
78%
0 50 100 150 200 250 300 350 400Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
35
40
45
P (k
W)
0
10
20
30
NPS
H (m
)
0
1
2
3
4
5
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
80.3%
9"10"
11"
12"
13"
19
ANSIHEAVY-DUTY PROCESS 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 DiameterMARCH 1967 6”8”
1450 rpm
ANSI 7086 x 8 - 13
HEA
D (m
)P
(kW
)N
PSH
(m)
Q (m3/hr)
0
5
10
1,5
2
2,5
3
3,5
4
15
20
25
30
35
40
45
10
15
20
25
30
35
40
0 100 200 300 400 500 600
13"
12"
11"
11"
11"
10"
10"
10"
12"
12"
13"
Series 1
50% 60% 68% 75% 77%79% 80%
81%81%
80%79%
77%75%
72%68%
60%
ANSIHEAVY-DUTY PROCESS 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 DiameterMARCH 1967 6”8”
1450 rpm
ANSI 7086 x 8 - 15
HEA
D (m
)P
(kW
)N
PSH
(m)
Q (m3/hr)0 100 200 300 400 500 600 700
0
0
20
40
60
80
1,5
3,5
5,5
10
20
30
40
50
60
15" 50% 60%65%70%
75%78%
82% 84%
84%82%
80%78%
75%
80%
14"
13"
12"
11"
15"
15"14"
13"12"11"
14"13"
12"11"
21
ANSIHEAVY-DUTY PROCESS 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 DiameterMARCH 1967 8”10”
1450 rpm
ANSI 7088 x 10 - 13
HEA
D (m
)P
(kW
)N
PSH
(m)
Q (m3/hr)0
0
0
5
10
10
1,5
2,5
3,5
4,5
5,5
20
30
40
50
60
70
15
20
25
30
35
40
100 200 300 400 500 600 700 800 900
13"
13"
13"12½"12"
12½"
12"
11½"11"
10½"
12½"12"11½"11"
10½"
50%55%60%
65%70%74%78%
80%82%84%86%
86%
84%82%
80%78%
74%
11½"11"
10½"
ANSIHEAVY-DUTY PROCESS 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 DiameterMARCH 1967 8”10”
1450 rpm
ANSI 7088 x 10 - 15G
HEA
D (m
)P
(kW
)N
PSH
(m)
1,5
3,5
5,5
Q (m3/hr)200
0
5
10
15
20
25
30
35
40
45
50
300 400 500 600 700 800 900
15"
15"14"13"12"
60% 65%70%
70%
75%
75%
80% 84%
84%80%
86%
86%
88%
88%14"
13"
12"
0
10
20
30
40
50
60
70
80
90
100
13"
14"
15"
12"
23
ANSIHEAVY-DUTY PROCESS 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 DiameterMARCH 1967 8”10”
1450 rpm
ANSI 7088 x 10 - 15
HEA
D (m
)P
(kW
)N
PSH
(m)
Q (m3/hr)400
0
0
1,5
3,5
5,5
0
20
40
60
80
100
120
140
10
20
30
40
50
60
500 600 700 800 900 1000 1100 1200 1300
15"
15"
15"
70% 74% 77% 80%83%
85%83%
80%77%
87%
85%14½"
14½"
14½"
14"
14"
14"
13½"
13½"
13½"
13"
13"
13"
12½"
12½"
12½"
ANSIHEAVY-DUTY PROCESS PUMPS
24
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 1”1½”
2900 rpm
ANSI 3431 x 1½ - 6
30% 35%
35%
40%
40%
45%
45%
50%
50%
53%
53%
0 5 10 15 20 25 30Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
35
P (k
W)
0
1
2
3
NPS
H (m
)
0
1
2
3
4
3.5"
3.5"
4"
4"
4.5"
4.5"
5"
5"
5.5"
5.5"
6.06"
6.06"
54.0%
3.5"4"
4.5"
5"
5.5"
6.06"
25
ANSIHEAVY-DUTY PROCESS 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 1”1½”
2900 rpm
ANSI 3431 x 1½ - 8
40% 45%
45%
50%
50%
53%
53%
56%
56%
58%
58%
0 5 10 15 20 25 30 35 40Q (m3/hr)
HEA
D (m
)
0
10
20
30
40
50
60
70
P (k
W)
0
2
4
6
8
10
NPS
H (m
)
0
1
2
3
4
5
5"
5"
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
59.2%
5" 5.5"
6"6.5"
7"
7.5"
8"
ANSIHEAVY-DUTY PROCESS PUMPS
26
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 1½”3”
2900 rpm
ANSI 3431½ x 3 - 6
40% 50%
50%
55%
55%
60%
60%
63%
63%
65%
65%
0 10 20 30 40 50 60Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
35
40
P (k
W)
0
1
2
3
4
5
NPS
H (m
)
0
1
2
3
4
5
4"
4"
4.5"
4.5"
5"
5"
5.5"
5.5"
6.06"
6.06"
66.4%
4"4.5"
5"
5.5"
6.06"
27
ANSIHEAVY-DUTY PROCESS 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 1½”3”
2900 rpm
ANSI 4951½ x 3 - 8
40%50%
50%
55%
55%
59%
59%
0 10 20 30 40 50 60Q (m3/hr)
HEA
D (m
)
0
10
20
30
40
50
60
70
P (k
W)
0
4
8
12
NPS
H (m
)
0
1
2
3
4
5
5"
5"
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
61.1%
5"5.5"
6"6.5"
7"
7.5"
8"
ANSIHEAVY-DUTY PROCESS 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 1½”3”
2900 rpm
ANSI 4951½ x 3 - 10
45% 50%
50%
54%
54%
57%
57%
59%
59%
61%
61%
0 10 20 30 40 50 60 70 80Q (m3/hr)
HEA
D (m
)
0
20
40
60
80
100
P (k
W)
0
4
8
12
16
20
NPS
H (m
)
0
1
2
3
4
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
61.6%
6"7"
8"
9"
10"
29
ANSIHEAVY-DUTY PROCESS 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 1½”3”
2900 rpm
ANSI 4951½ x 3 - 13
40%45% 50%
54%
54%
56%
56%
58%
58%
0 20 40 60 80 100 120Q (m3/hr)
HEA
D (m
)
40
60
80
100
120
140
160
P (k
W)
0
20
40
60
NPS
H (m
)
0
2
4
6
8
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
58.6%
9"
10"
11"
12"
13"
ANSIHEAVY-DUTY PROCESS 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 1”2”
2900 rpm
ANSI 4951 x 2 - 10
25% 30% 35%40%
40%
43%
43%
0 5 10 15 20 25 30 35Q (m3/hr)
HEA
D (m
)
0
20
40
60
80
100
120
P (k
W)
0
4
8
12
16
NPS
H (m
)
0.0
0.5
1.0
1.5
2.0
2.5
5"
5"
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
44.7%
5"6"
7"
8"
9"
10"
31
ANSIHEAVY-DUTY PROCESS 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 2”3”
2900 rpm
ANSI 3432 x 3 - 6
45% 50% 55%
55%
60%
60%
64%
64%
67%
67%
69%
69%
70%
70%
0 10 20 30 40 50 60 70 80 90Q (m3/hr)
HEA
D (m
)
0
5
10
15
20
25
30
35
40
P (k
W)
0
2
4
6
8
NPS
H (m
)
0
2
4
6
8
4"
4"
4.5"
4.5"
5"
5"
5.5"
5.5"
6.06"
6.06"
71.0%
4"
4.5"
5"
5.5"
6.06"
ANSIHEAVY-DUTY PROCESS 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 2”3”
2900 rpm
ANSI 4952 x 3 - 8
45% 50%
50%
54%
54%
58%
58%
61%
61%
63%
63%
0 10 20 30 40 50 60 70Q (m3/hr)
HEA
D (m
)
10
20
30
40
50
60
70
P (k
W)
0
4
8
12
16
NPS
H (m
)
0
1
2
3
4
5
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
8.370"
8.370"
63.7%
5.5"6"
6.5"7"
7.5"
8"
8.370"
33
ANSIHEAVY-DUTY PROCESS 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 2”3”
2900 rpm
ANSI 4952 x 3 - 10
55%
55%
60%
60%
62%
62%
64%
64%
0 20 40 60 80 100 120Q (m3/hr)
HEA
D (m
)
0
20
40
60
80
100
120
P (k
W)
0
10
20
30
40
NPS
H (m
)
0
2
4
6
8
10
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
64.5%
6"7"
8"
9"
10"
ANSIHEAVY-DUTY PROCESS PUMPS
34
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 2”3”
2900 rpm
ANSI 4952 x 3 - 13
59% 61% 63%
63%
64%
64%
65%
65%
66%
66%
002051001050Q (m3/hr)
HEA
D (m
)
40
50
60
70
80
90
100
110
120
130
140
150
P (k
W)
0
20
40
60
80
100
NPS
H (m
)
0
4
8
12
16
9"
9"
10"
10"
11"
11"
12"
12"
13"
13"
66.5%
9"10"
11"
12"
13"
35
ANSIHEAVY-DUTY PROCESS 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 3”4”
2900 rpm
ANSI 4953 x 4 - 8G
40% 50% 56%
56%
62%
62%
64%
64%
66%
66%
70%
70%
72%
72%
0 20 40 60 80 100 120 140 160 180Q (m3/hr)
HEA
D (m
)
0
10
20
30
40
50
60
70
80
P (k
W)
0
10
20
30
NPS
H (m
)
0
2
4
6
8
5.5"
5.5"
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
8.38"
8.38"
72.3%
5.5"6"
6.5"
7"
7.5"
8"
8.38"
ANSIHEAVY-DUTY PROCESS PUMPS
36
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 3”4”
2900 rpm
ANSI 4953 x 4 - 8
60% 65% 70%
70%
74%
74%
78%
78%
81%
81%
83%
83%
0 25 50 75 100 125 150 175 200 225 250Q (m3/hr)
HEA
D (m
)
10
20
30
40
50
60
70
P (k
W)
0
10
20
30
40
NPS
H (m
)
0
2
4
6
8
6"
6"
6.5"
6.5"
7"
7"
7.5"
7.5"
8"
8"
8.38"
8.38"
83.7%
6"6.5"
7"
7.5"
8"
8.38"
37
ANSIHEAVY-DUTY PROCESS 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 3”4”
2900 rpm
ANSI 4953 x 4 - 10
50% 60%
60%
65%
65%
69%
69%
71%
71%
72%
72%
0 25 50 75 100 125 150 175Q (m3/hr)
HEA
D (m
)
0
20
40
60
80
100
P (k
W)
0
10
20
30
40
50
NPS
H (m
)
0
2
4
6
6"
6"
7"
7"
8"
8"
9"
9"
10"
10"
72.5%
6"
7"8"
9"
10"
ANSIHEAVY-DUTY PROCESS PUMPS
38
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39
ANSIHEAVY-DUTY PROCESS PUMPS
Notes_________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________
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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
08600 RAPID
10 Girder Street • Isando • 1601T: +27 11 573 7400 • F: +27 11 974 8757
www.rapidallweiler.co.za
