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STERLINGPUM PS
www.sterlingpumps.com.au
TECHNICAL DATA
VT seriesVertical Line Shaft
Turbines
5″ to 18″
5"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-5AA 2900 rpm
2
3
4
5
6
7
8
9
10
11
1
0 6 12
0
20
40
60
80
100
120
140
0 5 10 15 20 25 30 35 40 45[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 5 10 15 20 25 30 35 40 45
NPS
H [m
]
[m³/hr]
P
ƞ45
60
75
90
0
0.5
1
1.5
0 5 10 15 20 25 30 35 40 45
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
m³/hr]
5"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-5BA 2900 rpm
2
3
4
5
6
7
8
9
10
11
1
0 6 12 18
0
20
40
60
80
100
120
0 10 20 30 40 50 60 70[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 10 20 30 40 50 60 70
NPS
H [m
]
[m³/hr]
P
ƞ
40
60
80
100
0
0.5
1
1.5
0 10 20 30 40 50 60 70
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
5"VT-5BA 2900 rpm
13
14
15
16
17
18
19
20
21
22
12
0 6 12 18
30
50
70
90
110
130
150
170
190
210
0 10 20 30 40 50 60 70[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 10 20 30 40 50 60 70
NPS
H [m
]
[m³/hr]
P
ƞ
40
60
80
100
0
0.5
1
1.5
0 10 20 30 40 50 60 70
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
6"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-6AA 2900 rpm
2
3
4
5
6
7
8
9
10
11
1
0 6 12 18
0
20
40
60
80
100
120
140
160
180
0 10 20 30 40 50 60 70[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 10 20 30 40 50 60 70
NPS
H [m
]
m³/hr]
P
ƞ
45
60
75
90
0
0.5
1
1.5
2
0 10 20 30 40 50 60 70
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
6"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-6BA 2900 rpm
2
3
4
5
6
7
8
9
10
11
1
0 6 12 18 24
0
20
40
60
80
100
120
140
0 10 20 30 40 50 60 70 80 90 100[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 10 20 30 40 50 60 70 80 90 100
NPS
H [m
]
m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
0.5
1
1.5
2
2.5
3
0 10 20 30 40 50 60 70 80 90 100
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
6"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-6CA 2900 rpm
2
3
4
5
6
7
8
9
10
1
0 4 8 12 16 20 24 28 32
0
20
40
60
80
100
120
140
160
0 20 40 60 80 100 120[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
0 20 40 60 80 100 120
NPS
H [m
]
[m³/hr]
P
ƞ
20
40
60
80
0
1
2
3
4
0 20 40 60 80 100 120
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
6"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-6DA 2900 rpm
2
3
4
5
6
7
8
9
10
1
0 4 8 12 16 20 24 28 32
0
20
40
60
80
100
120
140
0 20 40 60 80 100 120[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 20 40 60 80 100 120
NPS
H [m
]
[m³/hr]
P
ƞ
20
40
60
80
100
0
1
2
3
0 20 40 60 80 100 120
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
7"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-7AA 2900 rpm
2
3
4
5
6
7
8
9
1
0 5 10 15 20 25
0
50
100
150
200
250
0 10 20 30 40 50 60 70 80 90[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
4
6
8
10
0 10 20 30 40 50 60 70 80 90
NPS
H [m
]
[m³/hr]
P
ƞ
20
40
60
80
0
2
4
6
8
0 10 20 30 40 50 60 70 80 90
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
7"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-7BA 2900 rpm
2
3
4
5
6
7
8
1
0 6 12 18 24 30 36
0
40
80
120
160
200
240
0 20 40 60 80 100 120 140[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
1
2
0 20 40 60 80 100 120 140
NPS
H [m
]
[m³/hr]
P
ƞ
40
60
80
100
0
1
2
3
4
5
6
0 20 40 60 80 100 120
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
7"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-7CA 2900 rpm
2
3
4
5
6
7
8
9
10
1
0 5 10 15 20 25 30 35 40 45 50 55
0
50
100
150
200
250
300
0 20 40 60 80 100 120 140 160 180 200[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
0.2
0.4
0.6
0.8
1
0 20 40 60 80 100 120 140 160 180 200
NPS
H [m
]
[m³/hr]
P
ƞ
0
20
40
60
80
100
0
10
20
0 20 40 60 80 100 120 140 160 180 200
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
7"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-7DA 2900 rpm
2
3
4
5
6
7
8
1
0 3 6 9 12 15 18 21 24 27 30 33
0
40
80
120
160
200
0 20 40 60 80 100 120[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
0 20 40 60 80 100 120
NPS
H [m
]
[m³/hr]
P
Ƞ
40
60
80
100
0
1
2
3
4
0 20 40 60 80 100 120
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8AA 2900 rpm
2
3
4
5
6
7
8
1
0 10 20 30 40 50 60 70 80 90
0
40
80
120
160
200
240
0 50 100 150 200 250 300 350[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
4
6
8
10
12
0 50 100 150 200 250 300 350
NPS
H [m
]
[m³/hr]
P
ƞ
20
40
60
80
100
4
5
6
7
8
9
10
11
12
13
0 50 100 150 200 250 300 350
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8CA 2900 rpm
2
3
4
5
6
7
8
1
0 3 6 9 12 15 18 21 24 27 30 33 36
0
40
80
120
160
200
240
280
0 20 40 60 80 100 120 140[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
10
0 20 40 60 80 100 120 140
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
90
4
5
6
7
8
0 20 40 60 80 100 120 140
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8DA 2900 rpm
2
3
4
5
6
7
8
1
0 10 20 30 40
0
40
80
120
160
200
240
280
0 20 40 60 80 100 120 140 160[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
02468
1012
0 20 40 60 80 100 120 140 160
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
2
4
6
8
10
12
0 20 40 60 80 100 120 140 160
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8DB 2900 rpm
2
3
4
5
6
7
8
1
0 6 12 18 24 30 36
0
40
80
120
160
200
240
280
0 20 40 60 80 100 120 140[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
02468
1012
0 20 40 60 80 100 120 140
NPS
H [m
]
[m³/hr]
P
ƞ
30
40
50
60
70
80
90
100
0
2
4
6
8
10
0 20 40 60 80 100 120 140
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8EA 2900 rpm
2
3
4
5
6
7
8
1
0 10 20 30 40 50 60 70 80
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200 250 300[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0123456
0 50 100 150 200 250 300
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
90
1
2
3
4
5
6
7
0 50 100 150 200 250 300
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8GA 2900 rpm
2
3
4
5
6
7
8
1
0 3 6 9 12 15 18 21 24 27 30 33 36 39 42
0
20
40
60
80
100
120
140
160
180
200
0 20 40 60 80 100 120 140 160[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
0 20 40 60 80 100 120 140 160
NPS
H [m
]
[m³/hr]
P
ƞ
30
50
70
90
0
1
2
3
4
5
6
7
0 20 40 60 80 100 120 140 160
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
8"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-8HA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60
0
20
40
60
80
100
120
140
160
180
200
0 50 100 150 200 250[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
0 50 100 150 200 250
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
0
5
10
15
20
0 50 100 150 200 250
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10AA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60 70 80 90
0
50
100
150
200
250
300
0 50 100 150 200 250 300 350[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
0 50 100 150 200 250 300 350
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
15
20
25
30
0 50 100 150 200 250 300 350
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10BA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60 70 80 90 100 110 120
0
50
100
150
200
250
300
0 50 100 150 200 250 300 350 400 450[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
25
0 50 100 150 200 250 300 350 400 450
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
20
25
30
35
40
45
0 50 100 150 200 250 300 350 400 450
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10CA 2900 rpm
2
3
4
5
1
0 20 40 60 80 100 120 140 160
0
50
100
150
200
250
0 100 200 300 400 500 600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
25
0 100 200 300 400 500 600
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
90
20
25
30
35
40
45
0 100 200 300 400 500 600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10DA 2900 rpm
2
3
4
5
1
0 10 20 30 40 50 60 70 80 90 100 110 120 130
0
50
100
150
200
250
300
0 50 100 150 200 250 300 350 400 450 500[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0123456
0 50 100 150 200 250 300 350 400 450 500
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
10
20
30
40
0 50 100 150 200 250 300 350 400 450 500
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10EA 2900 rpm
2
3
4
5
6
1
0 20 40 60 80 100 120 140 160
0
50
100
150
200
250
0 100 200 300 400 500 600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
0 100 200 300 400 500 600
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
90
0
10
20
30
40
50
0 100 200 300 400 500 600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10GA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60
0
50
100
150
200
250
300
350
0 50 100 150 200 250[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
0 50 100 150 200 250
NPS
H [m
]
[m³/hr]
P
ƞ
20
30
40
50
60
70
80
90
100
0
5
10
15
20
25
0 50 100 150 200 250
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10HA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60 70 80
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
0 50 100 150 200 250 300
NPS
H [m
]
[m³/hr]
P
ƞ
50
60
70
80
0
5
10
15
20
25
30
35
40
0 50 100 150 200 250 300
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10JA 2900 rpm
2
3
4
5
6
1
0 10 20 30 40 50 60 70 80
0
50
100
150
200
250
300
350
0 50 100 150 200 250 300[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
25
0 50 100 150 200 250 300
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
05
101520253035404550
0 50 100 150 200 250 300
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
10"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-10KA 2900 rpm
2
3
4
5
1
0 10 20 30 40 50 60 70 80 90 100 110 120
0
50
100
150
200
250
300
0 50 100 150 200 250 300 350 400 450[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
05
1015202530
0 50 100 150 200 250 300 350 400 450
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
10
15
20
25
30
35
40
0 50 100 150 200 250 300 350 400 450
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12AA 1450 rpm
2
3
4
5
6
7
8
9
1
0 50
0
20
40
60
80
100
120
140
160
180
200
0 50 100 150 200 250 300 350[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
0 50 100 150 200 250 300 350
NPS
H [m
]
[m³/hr]
P
ƞ
60
70
80
90
0
2
4
6
8
10
12
0 50 100 150 200 250 300 350
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12AA 1750 rpm
2
3
4
5
1
0 10 20 30 40 50 60 70 80 90 100 110
0
20
40
60
80
100
120
140
160
0 50 100 150 200 250 300 350 400[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
10
0 50 100 150 200 250 300 350 400
NPS
H [m
]
[m³/hr]
P
ƞ
60
70
80
90
02468
101214161820
0 50 100 150 200 250 300 350 400
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12BA 1450 rpm
2
3
4
5
6
7
8
1
0 50 100
0
20
40
60
80
100
120
140
0 50 100 150 200 250 300 350 400 450 500[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0123456
0 50 100 150 200 250 300 350 400 450 500
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
23456789
101112
0 50 100 150 200 250 300 350 400 450 500
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12BA 1750 rpm
2
3
4
5
1
0 20 40 60 80 100 120 140 160
0
20
40
60
80
100
120
0 100 200 300 400 500 600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
10
0 100 200 300 400 500 600
NPS
H [m
]
[m³/hr]
P
ƞ
50
60
70
80
90
100
2468
10121416182022
0 100 200 300 400 500 600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12BA 2900 rpm
2
3
1
0 50 100 150 200 250
0
20
40
60
80
100
120
140
160
180
200
0 100 200 300 400 500 600 700 800 900 1000[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
25
0 100 200 300 400 500 600 700 800 900 1000
NPS
H [m
]
[m³/hr]
P
ƞ
0
10
20
30
40
50
60
70
80
90
60
70
80
90
100
110
120
0 100 200 300 400 500 600 700 800 900 1000
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12CA 1450 rpm
2
3
4
5
6
1
0 20 40 60 80 100 120 140 160
0
10
20
30
40
50
60
70
80
90
100
0 100 200 300 400 500 600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
0 100 200 300 400 500 600
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
2
4
6
8
10
12
14
16
18
0 100 200 300 400 500 600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
12"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-12CA 1750 rpm
2
3
4
5
1
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190
0
20
40
60
80
100
120
0 100 200 300 400 500 600 700[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
456789
10
0 100 200 300 400 500 600 700
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
10
20
30
0 100 200 300 400 500 600 700
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
14"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-14AA 1450 rpm
2
3
4
5
1
0 20 40 60 80 100 120 140 160 180 200 220
0
20
40
60
80
100
120
140
0 100 200 300 400 500 600 700 800[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
2
4
6
8
10
0 100 200 300 400 500 600 700 800
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
5
10
15
20
25
30
0 100 200 300 400 500 600 700 800
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
14"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-14AA 1750 rpm
2
3
4
1
0 20 40 60 80 100 120 140 160 180 200 220 240
0
20
40
60
80
100
120
140
0 100 200 300 400 500 600 700 800 900[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
10
20
0 100 200 300 400 500 600 700 800 900
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
10
20
30
40
50
60
0 100 200 300 400 500 600 700 800 900
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
14"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-14BA 1450 rpm
2
3
4
5
6
7
1
0 50 100 150 200 250 300
0
20
40
60
80
100
120
140
160
180
0 200 400 600 800 1000 1200[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
02468
1012
0 200 400 600 800 1000 1200
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
0
10
20
30
40
0 200 400 600 800 1000 1200
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
14"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-14BA 1750 rpm
2
3
4
5
6
7
1
0 50 100 150 200 250 300 350
0
50
100
150
200
250
0 200 400 600 800 1000 1200 1400[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
10
20
0 200 400 600 800 1000 1200 1400
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
0
10
20
30
40
50
60
0 200 400 600 800 1000 1200 1400
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
16"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-16AA 1450 rpm
2
3
4
5
6
7
8
1
0 20 40 60 80 100 120 140 160 180 200 220 240 260
0
50
100
150
200
250
300
0 100 200 300 400 500 600 700 800 900 1000[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
4
8
12
0 100 200 300 400 500 600 700 800 900 1000
NPS
H [m
]
[m³/hr]
P
ƞ
50
60
70
80
90
100
0
10
20
30
40
50
0 100 200 300 400 500 600 700 800 900 1000
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
16"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-16AA 1750 rpm
2
3
4
5
6
7
8
1
0 50 100 150 200 250 300
0
50
100
150
200
250
300
350
400
450
0 200 400 600 800 1000 1200[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
10
20
0 200 400 600 800 1000 1200
NPS
H [m
]
[m³/hr]
P
ƞ
50
60
70
80
90
100
0
10
20
30
40
50
60
70
80
0 200 400 600 800 1000 1200
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18AA 1450 rpm
2
3
4
5
1
0 50 100 150 200 250 300 350
0
50
100
150
200
250
0 200 400 600 800 1000 1200 1400[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
0 200 400 600 800 1000 1200 1400
NPS
H [m
]
[m³/hr]
P
ƞ
50
60
70
80
90
100
0
10
20
30
40
50
60
70
80
0 200 400 600 800 1000 1200 1400
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18AA 1750 rpm
2
3
4
1
0 100 200 300 400
0
50
100
150
200
250
0 200 400 600 800 1000 1200 1400 1600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
0 200 400 600 800 1000 1200 1400 1600
NPS
H [m
]
[m³/hr]
P
ƞ
60
70
80
90
100
0
20
40
60
80
100
120
140
0 200 400 600 800 1000 1200 1400 1600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18BA 1450 rpm
2
3
1
0 50 100 150 200 250 300
0
20
40
60
80
100
120
0 200 400 600 800 1000 1200[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
4
8
12
0 200 400 600 800 1000 1200
NPS
H [m
]
[m³hr]
P
ƞ
0102030405060708090100
35
40
45
50
55
60
65
70
0 200 400 600 800 1000 1200
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18BA 1750 rpm
2
1
0 50 100 150 200 250 300 350
0
20
40
60
80
100
120
0 200 400 600 800 1000 1200 1400[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
0 200 400 600 800 1000 1200 1400
NPS
H [m
]
[m³/hr]
P
ƞ
0102030405060708090100
40
60
80
100
120
140
0 200 400 600 800 1000 1200 1400
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18CA 1450 rpm
2
3
4
5
1
0 50 100 150 200 250 300 350
0
50
100
150
200
250
0 200 400 600 800 1000 1200 1400[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
5
10
15
20
0 200 400 600 800 1000 1200 1400
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
20
40
60
80
100
0 200 400 600 800 1000 1200 1400
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
18"
Performance curves are drafted based on pumping clean water (S.G. of 1.0 g/cm3) at temperature of 20 °C.Pump performance comply to ISO 9906 gr. 3b.Indicated efficiency values are valid for pumps in 3 stages or more.Consult with factory for curves at different speeds or trimmed impeller diameter.
VT-18CA 1750 rpm
2
3
1
0 50 100 150 200 250 300 350 400
0
20
40
60
80
100
120
140
160
180
200
0 200 400 600 800 1000 1200 1400 1600[Litre/sec]
Tota
l Hea
d (m
)
[m3/hr]
50 HZ
0
10
20
30
0 200 400 600 800 1000 1200 1400 1600
NPS
H [m
]
[m³/hr]
P
ƞ
40
50
60
70
80
90
100
0
20
40
60
80
100
120
140
0 200 400 600 800 1000 1200 1400 1600
Effic
ienc
y [%
]
Pow
er [k
W] P
er S
tage
[m³/hr]
Water Lube ColumnNominal diameter (inches)
Length (metres)
Flange OD Collar OD(mm) (mm)
4" 160 1266" 235 180 8 TPI8" 270 250
4" 160 1266" 235 1808" 270 250
10" 336 29112" 412 316
6" 235 1808" 270 250
10" 336 29112" 412 31614" 440 na16" 580 na
6" 235 1808" 270 250
10" 336 29112" 412 31614" 440 na16" 580 na18" 640 na
Notes for all Column:Shaft couplings are Bronze Carbon Steel threaded column collar is Carbon steelBearing Retainers are Bronze 304SS threaded column collar is BronzeShaft material is 431SS TPI = Threads per InchPumps above 2,200 rpm must use 1.5 metre bearing centre columnPumps below 2,200 rpm may use 3 metre bearing centre columnCarbon steel external surfaces are painted in bitumous black paint for corrosion resistanceThreaded columns use industry standard thread pitch, right hand. Left hand available as an option
Feb-18
3 M1-1/2" 8 TPISch 40
Subject to change with continuous improvement. If critical, confirm with Sterling Pumps
1-3/4" 3 M 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40
3 M 1.5 M Sch 40 CS Sch 10 SS
3 M 1.5 M
Carbon Steel or 304SS
Pipe Pipe
Sch 401" 3 M 3 M 1.5 M
Line shaft size
(inches)
Column nominal
size diameter
Column Length
(metres)
Bearing Centres (metres)
(refer to speed note)
Sterling Pumps Pty Ltd T: 03 5941 3400 [email protected]
8 TPI
Sch 40 CS Sch 10 SS
FLANGED
1-1/4" Sch 40 CS Sch 10 SS Sch 40 8 TPI
THREADEDCarbon Steel or 304SS
Thread
3 M
Oil Lube ColumnNominal diameter (inches)
Length (metres)
Flange OD Collar OD(mm) (mm)
4" 160 1266" 235 180 8 TPI8" 270 250
4" 160 1266" 235 1808" 270 250
10" 336 29112" 412 316
6" 235 1808" 270 250
10" 336 29112" 412 31614" 440 na16" 580 na
6" 235 1808" 270 250
10" 336 29112" 412 31614" 440 na16" 580 na18" 640 na
Notes for all Column:Shaft couplings are Carbon Steel (in oil) Carbon Steel threaded column collar is Carbon steelBearings are Bronze 304SS threaded column collar is BronzeShaft material is 431SS TPI = Threads per InchFor vertical installations, install Oil Tube stabiliser (centraliser) at least one (1) every 12 metresFor inclined/angled installations, install Oil Tube stabiliser (centraliser) every 3 metresCarbon steel column and Oil Tube external surfaces are painted in bitumous black paint for corrosion resistanceThreaded columns use industry standard thread pitch, right hand. Left hand available as an option
Feb-18
8 TPI
Sterling Pumps Pty Ltd T: 03 5941 3400 [email protected]
3"
Subject to change with continuous improvement. If critical, confirm with Sterling Pumps
1-3/4" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40
8 TPI
1-1/2" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40 8 TPI
2"
2-1/2"
1-1/4" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 40
1" 3 M 1.5 M Sch 40 CS Sch 10 SS Sch 402"
Line shaft size
(inches)
Column nominal
size diameter
Column Length
(metres)
Bearing Centres (metres)
FLANGED THREADEDCarbon Steel or 304SS Carbon Steel or 304SS
Pipe Pipe Thread
Oil Lube Tube
(inches)
Conversion charts
Multiplier Unit1 m³/h 5 10 20 30 40 50 60 70 80 90
24 m³/day 120 240 480 720 960 1,200 1,440 1,680 1,920 2,1600.277778 L/S 1.4 2.8 5.6 8.3 11.1 13.9 16.7 19.4 22.2 25.016.6667 LPM 83 167 333 500 667 833 1,000 1,167 1,333 1,5003.66615 IGPM 18 37 73 110 147 183 220 257 293 3304.40287 USGPM 22 44 88 132 176 220 264 308 352 396
0.001 ML/hr 0.005 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.090.024 ML/day 0.12 0.24 0.48 0.72 0.96 1.2 1.44 1.68 1.92 2.16
Multiplier Unit1 m³/h 100 200 300 400 500 600 700 800 900 1,000
24 m³/day 2,400 4,800 7,200 9,600 12,000 14,400 16,800 19,200 21,600 24,0000.277778 L/S 27.8 55.6 83.3 111.1 138.9 166.7 194.4 222.2 250.0 277.816.6667 LPM 1,667 3,333 5,000 6,667 8,333 10,000 11,667 13,333 15,000 16,6673.66615 IGPM 367 733 1,100 1,466 1,833 2,200 2,566 2,933 3,300 3,6664.40287 USGPM 440 881 1,321 1,761 2,201 2,642 3,082 3,522 3,963 4,403
0.001 ML/hr 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10.024 ML/day 2.4 4.8 7.2 9.6 12 14.4 16.8 19.2 21.6 24
Multiplier Unit1 m³/h 1,100 1,200 1,400 1,600 1,800 2,000 2,500 3,000 3,500 4,000
24 m³/day 26,400 28,800 33,600 38,400 43,200 48,000 60,000 72,000 84,000 96,0000.277778 L/S 306 333 389 444 500 556 694 833 972 1,11116.6667 LPM 18,333 20,000 23,333 26,667 30,000 33,333 41,667 50,000 58,333 66,6673.66615 IGPM 4,033 4,399 5,133 5,866 6,599 7,332 9,165 10,998 12,832 14,6654.40287 USGPM 4,843 5,283 6,164 7,045 7,925 8,806 11,007 13,209 15,410 17,611
0.001 ML/hr 1.1 1.2 1.4 1.6 1.8 2 2.5 3 3.5 40.024 ML/day 26.4 28.8 33.6 38.4 43.2 48 60 72 84 96
Multiplier Unit1 PSI 10 20 30 40 50 75 100 125 150 200
6.89476 kPa 69 138 207 276 345 517 689 862 1,034 1,3790.0689476 Bar 0.7 1.4 2.1 2.8 3.4 5.2 6.9 8.6 10.3 13.87.032496 M head 70 141 211 281 352 527 703 879 1,055 1,406
23.066587 Ft head 231 461 692 923 1,153 1,730 2,307 2,883 3,460 4,613
Multiplier Unit1 PSI 250 300 350 400 450 550 600 650 700 750
6.89476 kPa 1,724 2,068 2,413 2,758 3,103 3,792 4,137 4,482 4,826 5,1710.0689476 Bar 17.2 20.7 24.1 27.6 31.0 37.9 41.4 44.8 48.3 51.77.032496 M head 1,758 2,110 2,461 2,813 3,165 3,868 4,219 4,571 4,923 5,274
23.066587 Ft head 5,767 6,920 8,073 9,227 10,380 12,687 13,840 14,993 16,147 17,300
Nov-17 Some values in the charts have been rounded to single or no decimal points
All effort has been made for accurate calculations, reconfirm prior to use
VOLUME FLOW RATE - CAPACITY
VOLUME FLOW RATE - CAPACITY
VOLUME FLOW RATE - CAPACITY
PRESSURE
PRESSURE
Minimum Submergence
A submersible borehole/well pump must be submerged at all times.
Identify the flow rate you require and go up the graph to the NPSH curve/line.
Examples:At the nominal flow rate of 80 m³/h the NPSH is 3 metres.
Now use the 3 metres and subtract atmospheric pressure of 9.81 metres.The result is a negative figure which is not acceptable for a pump intake.
NPSH(M) - G(M) + 1M = minimum submergenceNPSHr = Net Positive Suction Head required. G = head of atmospheric pressure. M = metre
If the value calculated is above zero, use that figure and add 1 metre
Note:
Nov-17
Minimum submergence is considered from the bottom of the suction strainer for submersible pumps and from the bottom of the suction bell for vertical line shaft turbine pumps.
The pump suction intake must be sufficiently submerged to prevent cavitation and avoid the formation of vortexes being created on the liquid being pumped.
When a vortex forms, this can cause air to mix with the water being pumped, causing possible cavitation and reduce the pump capacity and can lead to internal damage of the impellers and bowls.To avoid free surface vortex formation, you would use the minimum submergence figure recommended by the manufacturer in their charts.
If the value calulated is less than zero metres, for our submersible pumps we would recommend a minimum submergence 'Y' of 1 metre.
Example: If the NPSH curve shows 12 metres, subtract 9.81 metres which equals 2.2 metres, so the recommened minimum submergence 'Y' would be 3.2 metres. In our charts we would likely state 'Y' as being 3.5 or even 4 metres.
An approximate way to determine the submergence value for a submersible turbine pumps can be based from the NPSH curve;
All effort has been made for accurate calculations, figures and information
Friction Loss Chart for Standard Pipe Column
LOSS OF HEAD IN METRES PER 30 METRES OF COLUMN
76mm
3"32 32 38 50 32 38 50 38 50 64 38 50 64 50 64 76 89 50 64 76 89
19 19 25 32 19 25 32 25 32 38 25 32 38 32 38 45 50 32 38 45 50
1 0.22
2 0.63 0.23
3 1.3 0.17 0.24 0.48
4 2.25 0.29 0.4 0.8 0.11
5 3.25 0.43 0.4 1.2 0.12 0.17
6 4.75 0.62 0.85 1.7 0.15 0.18 0.25
7 6.3 0.82 1.12 2.3 0.2 0.24 0.34 0.14
8 1.04 1.44 2.9 0.25 0.31 0.43 0.13 0.18
9 1.28 1.75 3.6 0.31 0.38 0.52 0.12 0.13 0.23
10 1.52 2.1 4.3 0.37 0.45 0.63 0.145 0.19 0.27
12 2.2 3 5.9 0.53 0.64 0.88 0.19 0.27 0.38
14 2.8 3.8 0.67 0.81 1.13 0.27 0.35 0.49
16 3.5 4.8 0.85 1.04 1.45 0.34 0.44 0.62
18 4.4 1.1 1.3 1.8 0.42 0.55 0.77 0.12
20 5.5 1.3 1.6 2.3 0.53 0.67 0.96 0.15
22 1.6 1.9 2.7 0.63 0.8 1.03 0.15 0.18
24 1.8 2.3 3.2 0.73 0.95 1.33 0.17 0.21
26 2.1 2.6 3.6 0.83 1.08 1.52 0.11 0.2 0.24
28 2.4 2.9 4 0.94 1.2 1.73 0.13 0.23 0.28
30 2.7 3.25 4.6 1.05 1.37 1.95 0.14 0.26 0.32 0.11
35 3.5 4.25 6 1.4 1.8 2.6 0.19 0.34 0.41 0.12 0.15
40 4.6 5.5 1.8 2.35 3.3 0.25 0.43 0.54 0.12 0.15 0.19
45 5.6 2.2 2.85 4.1 0.31 0.53 0.65 0.13 0.15 0.19 0.23
50 2.7 3.4 4.8 0.37 0.64 0.78 0.16 0.19 0.23 0.29 0.09
60 3.7 4.75 0.51 0.86 0.107 0.23 0.26 0.32 0.39 0.11 0.13
70 4.8 0.66 1.14 1.4 0.3 0.35 0.42 0.52 0.12 0.13 0.16 0.18
80 0.88 1.5 1.88 0.39 0.41 0.55 0.68 0.15 0.17 0.2 0.23
90 1.08 1.84 2.3 0.48 0.55 0.67 0.83 0.19 0.21 0.25 0.28
100 1.28 2.24 2.7 0.58 0.65 0.79 1 0.23 0.25 0.3 0.35
120 1.77 3.1 3.7 0.79 0.89 1.1 1.4 0.32 0.35 0.4 0.47
140 2.4 4.1 5 1.05 1.2 1.46 1.8 0.42 0.46 0.54 0.63
160 3 5.1 1.32 1.5 1.86 2.3 0.53 0.59 0.68 0.78
180 3.7 6.2 1.64 1.8 2.3 2.8 0.65 0.71 0.83 0.96
200 4.4 1.95 2.2 2.7 3.4 0.77 0.85 1 1.1
225 5.4 2.4 2.8 3.4 4.2 0.95 1.1 1.2 1.4
250 3 3.4 4.1 5.1 1.2 1.3 1.5 1.8
300 4.2 4.7 5.8 1.7 1.8 2.2 2.5
350 5.6 6.2 2.3 2.5 2.9 3.3
400 7.3 2.9 3.2 3.7 4.3
Notes:
Multiplyl/s 60 lpml/s 3.6 m³/h
Nov-17
100mm4"
125mm5"
150mm6"
TUBE SIZE mm
SHAFT SIZE mm
LITR
ES P
ER S
ECO
ND
For data on column sizes over 300mm diameter, refer to Sterling Pumps
To convert
All effort has been made for accurate calculations, reconfirm prior to use
SIZE
300mm12"
250mm10"
COLUMN
For open line shaft column friction losses use above figures corresponding to the tube size used for enclosed shaft.
200mm8"
Shaft Rating Curves
20 25 32 38 45 50 57 64 70 76 82
1460 0.19 0.32 0.48 0.75 0.93 1.3 1.6 1.9 2.2 2.7 3.1
1770 0.24 0.4 0.56 0.93 1.1 1.5 1.8 2.2 2.6 3.2
2200 0.30 0.5 0.75 1.1 1.4 1.8 2.2 2.6
2900 0.39 0.66 0.95 1.4 1.8
3500 0.46 0.82 1.1
SHAFT Dia (mm)
20 25 32 38 45 50 57 64 70 76 82
kg/m 2.23 3.97 6.21 8.94 12.2 15.9 20.1 23.6 30.1 34.3 42
TUBE Dia (mm)
32 38 50 64 76 76 89 102 125 125 125
kg/m 4.45 5.4 7.47 11.4 15.3 15.3 18.6 22.3 30.9 30.9 30.9
Nov-17
Shaft Size (millimetres)SHAFT FRICTION LOSS in kW
RPM
Shafting and Tubing Weights - kg per linear metre (m)
All effort has been made for accurate calculations and figures
20
25
32
38
0
50
100
150
200
0 1 2 3 4 5 6 7
2900 RPMBefore using the charts, you need to calulate the total down thrust. This includes hydraulic thrust, line shaft weight and the weight of the bowls, shaft and impellers. Weight of bowls, shaft and impeller values can be negligible.
Having calulated the total thrust, the maximum shaft loading can be taken from the chart, using the applicable RPM chart.
An example:Speed = 2900 RPMThrust = 3000 kgShaft = 38mm diameter
Using the chart, the maximum load would be 205 kW
An example:Speed = 2900 RPMThrust = 2000 kgkW required = 55 kW at bowls
Using the chart, the correct shaft size will be 25mm as the loading exceeds the allowable for the 20mm shaft but is less than the allowable for the 25mm shaft.
Thrust in kg x 1000
Max
imum
reco
mm
ende
d kW
For different shaft materials, apply the following multipliers:MATERIAL MULTIPLIER
AISI C1045 HTS 1.0431 Stainless Steel 1.0416 Stainless Steel 0.9316 Stainless Steel 0.8
Shaft diameter in millimetres (mm)
Shaft Rating Curves
Solid line curves: bottom and left scale
Dash line curves: top and right scale
Solid line curves: bottom and left scale
Dash line curves: top and right scale
Nov-17 All effort has been made for accurate calculations and figures
25
32
38
45
0
50
100
150
200
250
0 1 2 3 4 5 6 7 8
2200 RPM
Thrust in kg x 1000
Max
imum
reco
mm
ende
d kW
Shaft diameters in millimetres (mm)
20
25
32
38
0
50
100
150
200
250
0 1 2 3 4 5 6 7 8
3500 RPM
Thrust in kg x 1000
Max
imum
reco
mm
ende
d kW
20
25
32
3845
50
57
64
0 2 4 6 8 10 12
0
100
200
300
400
500
600
700
800
0
10
20
30
40
50
60
70
80
0 1 2 3 4 5 6
1770 RPM
Max
imum
reco
mm
ende
d kW
Thrust in kg x 1000
20
25
32
38
45
50
57
64
0 4 8 12 16
0
100
200
300
400
500
0
20
40
60
80
100
0 1 2 3 4
1460 RPM
Max
imum
reco
mm
ende
d kW
Thrust in kg x 1000
Column & Tube Elongation Chart
80mm 100mm 125mm 150mm 200mm 250mm 300mmkg 3" 4" 5" 6" 8" 10" 12"100 0.07 0.05 0.04 0.03200 0.15 0.11 0.09 0.06300 0.22 0.16 0.13 0.09 0.06400 0.29 0.21 0.17 0.13 0.09500 0.36 0.27 0.21 0.16 0.12 0.06600 0.44 0.32 0.25 0.19 0.13 0.08700 0.51 0.37 0.30 0.23 0.15 0.09 0.09800 0.58 0.43 0.34 0.26 0.17 0.11 0.10900 0.66 0.48 0.38 0.29 0.19 0.12 0.11
1,000 0.73 0.53 0.42 0.32 0.21 0.14 0.121,200 0.88 0.64 0.51 0.39 0.26 0.18 0.151,400 1.02 0.75 0.59 0.45 0.30 0.21 0.181,600 1.17 0.86 0.68 0.52 0.34 0.24 0.201,800 1.31 0.96 0.76 0.58 0.38 0.27 0.232,000 1.46 1.07 0.85 0.64 0.43 0.31 0.252,250 1.20 0.95 0.72 0.48 0.34 0.282,500 1.34 1.60 0.81 0.53 0.38 0.312,750 1.47 1.16 0.89 0.59 0.42 0.343,000 1.60 1.27 0.97 0.64 0.46 0.373,250 1.38 1.05 0.70 0.50 0.413,500 1.48 1.13 0.75 0.53 0.443,750 1.59 1.21 0.80 0.57 0.474,000 1.69 1.29 0.86 0.61 0.504,500 1.90 1.45 0.96 0.69 0.565,000 1.61 1.07 0.76 0.625,500 1.77 1.18 0.84 0.696,000 1.93 1.28 0.91 0.756,500 2.09 1.39 0.99 0.817,000 2.25 1.50 1.07 0.878,000 1.71 1.22 1.009,000 1.92 1.37 1.12
10,000 2.14 1.52 1.2511,000 2.35 1.68 1.3712,000 2.56 1.83 1.5013,000 1.98 1.6214,000 2.13 1.7515,000 2.29 1.8716,000 2.44 2.0018,000 2.74 2.2520,000 2.50
32 38 38 50 64 76 90
(mm)(m)(200 x 10³ Mpa)
(kg)(mm²)
Nov-17
HT = Hydraulic thrust
e =
CSA = Cross Section Area
millimetres (mm) elongation per 30 metres of Column
All effort has been made for accurate calculations and figures
Figures shown are based on standard pipe column and enclosing tube with nominal ID. For open line shaft column multiple value by 1.3
COLUMN DIAMETER mm -millimetres (inches)HYDRAULIC THRUST
ENCLOSING TUBE DIAMETER mm
L x 1000 x HT x 9.8E x GSA
E = Modulas of elast.L = Shaft lengthe = elongation
Downthrust due to the hydraulic thrust of the pump causes the shaft and column to stretch after the pump is in operation.Unless the impellers can be and are raised off the bottom of the bowlsenough to allow for this stretch plus some running clearences,the impellers will rub, causing the pump to wear and increase kW powerrequired.With the total hydraulic downthrust known and the Column Elongationdetermined from this Chart, the total stretch of the column shaft for thesetting in question can be determined.To find the net elongation subtract from shaft elongation the column elongation.
Shaft Elongation Chart
20mm 25mm 32mm 38mm 45mm 50mm 57mm 64mm 70mm 76mm 82mmkg 3/4" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/4" 2-1/2" 2-3/4" 3" 3-1/4"100 0.52 0.29 0.19 0.13 0.09 0.07 0.06200 1.02 0.58 0.38 0.26 0.19 0.15 0.12 0.09300 1.55 0.87 0.57 0.39 0.28 0.22 0.17 0.14 0.12400 2.07 1.16 0.75 0.52 0.38 0.29 0.23 0.19 0.15 0.13500 2.58 1.45 0.94 0.55 0.47 0.36 0.29 0.23 0.19 0.16 0.14600 3.1 1.74 1.13 0.77 0.57 0.44 0.34 0.29 0.23 0.19 0.17700 3.61 2.04 1.32 0.90 0.66 0.51 0.40 0.33 0.27 0.23 0.19800 4.13 2.33 1.51 1.03 0.76 0.58 0.46 0.37 0.31 0.26 0.22900 4.65 2.62 1.70 1.16 0.85 0.65 0.52 0.42 0.35 0.29 0.25
1,000 5.16 2.91 1.89 1.29 0.95 0.73 0.57 0.47 0.38 0.32 0.281,200 6.42 3.49 2.26 1.55 1.14 0.87 0.69 0.56 0.46 0.39 0.331,400 4.07 2.64 1.81 1.32 1.02 0.80 0.65 0.54 0.45 0.391,600 4.65 3.02 2.07 1.52 1.16 0.92 0.74 0.61 0.52 0.441,800 5.23 3.40 2.32 1.71 1.31 1.03 0.84 0.69 0.58 0.502,000 5.82 3.77 2.58 1.90 1.45 1.15 0.93 0.77 0.65 0.552,250 6.54 4.24 2.90 2.13 1.63 1.29 1.05 0.86 0.73 0.622,500 4.72 3.22 2.37 1.81 1.43 1.16 0.96 0.81 0.692,750 5.19 3.55 2.61 2.00 1.58 1.28 1.06 0.89 0.763,000 5.66 3.87 2.84 2.18 1.72 1.39 1.15 0.97 0.833,250 6.13 4.20 3.08 2.36 1.86 1.51 1.25 1.05 0.893,500 6.60 4.51 3.32 2.54 2.01 1.63 1.34 1.13 0.963,750 4.84 3.56 2.72 2.15 1.74 1.44 1.21 1.034,000 5.16 3.79 2.90 2.29 1.86 1.54 1.29 1.104,500 5.81 4.27 3.27 2.58 2.09 1.73 1.45 1.245,000 6.45 4.74 3.63 2.67 2.32 1.92 1.61 1.385,500 5.21 4.00 3.16 2.56 2.11 1.78 1.516,000 5.69 4.36 3.44 2.79 2.30 1.94 1.656,500 6.16 4.72 3.73 3.02 2.50 2.10 1.797,000 6.64 5.08 4.02 3.25 2.69 2.26 1.938,000 5.81 4.59 3.71 3.07 2.59 2.209,000 6.53 5.16 4.18 3.46 2.90 2.48
10,000 5.74 4.65 3.84 3.23 2.7511,000 6.31 5.11 4.22 3.55 3.0212,000 5.58 4.61 3.87 3.3013,000 6.04 5.00 4.20 3.5714,000 6.51 5.38 4.52 3.8515,000 5.76 4.84 4.1216,000 6.14 5.16 4.4018,000 5.81 4.9520,000 6.45 5.50
e = elongationL = Shaft lengthE = Modulas of elast.HT = Hydraulic thrustCSA = Cross Section Area
Nov-17
e =
(200 x 10³ Mpa)
(mm)(m)
(kg)(mm²)
All effort has been made for accurate calculations and figures
millimetres (mm) elongation per 30 metres of Shaft
HYDRAULIC THRUST
SHAFT DIAMETER mm -millimetres (inches)
L x 1000 x HT x 9.8E x GSA
Figures shown are based on Grade CS 1040 Carbon steel. For grades of 300 series stainless steel multiple value by 1.3
Downthrust due to the hydraulic thrust of the pump causes the shaft andcolumn to stretch after the pump is in operation.Unless the impellers can be and are raised off the bottom of the bowls enoughto allow for this stretch plus some running clearences, the impellers will rub, causing the pump to wear and increase kW power required.With the total hydraulic downthrust known and the Shaft Elongation determinefrom this Chart, the total stretch of the column shaft for the setting in questioncan be determined.To find the net elongation subtract from shaft elongation the column elongation
Sterling Pumps Pty Ltd14 Sharnet Circuit, Pakenham, VIC, 3810
P: 03 5941 3400 F: 03 5940 [email protected]
www.sterlingpumps.com.au
STERLINGPUM PS
SPA027 08/17
STERLINGPUM PS
