|
     
Positive Displacement Pump Selection
Pump sets suitable for clean liquids
|
Pump |
Maximum
Capacity |
Maximum
Total
Head |
Motor
Rating |
Max.
Total
Suction Lift |
Pump
rev/min |
|
m3/hr |
US gpm |
m
H2O |
bar |
ft
H2O |
lb/in2 |
up to
75 cSt |
1000
cSt |
Water
and to
75 cSt |
1000
cSt |
| hp |
hp |
m
H2O |
ft
H2O |
m
H2O |
ft
H2O |
| |
|
L75 |
1.5 |
6.6 |
30 |
3 |
100 |
45 |
0.75 |
1 |
7 |
23 |
6.1 |
20 |
1760 |
|
L100 |
3 |
13.2 |
30 |
3 |
100 |
45 |
1.5 |
2 |
7 |
23 |
6.1 |
20 |
1760 |
|
L125 |
5 |
21.6 |
30 |
3 |
100 |
45 |
1.5 |
3 |
7 |
23 |
6.1 |
20 |
1440 |
|
L150 |
10 |
43.2 |
30 |
3 |
100 |
45 |
3 |
5.5 |
6.7 |
22 |
6.1 |
20 |
1370 |
|
L200 |
15 |
66 |
30 |
3 |
100 |
45 |
5.5 |
7.5 |
6.7 |
22 |
5.4 |
18 |
1250 |
|
L300 |
30 |
132 |
30 |
3 |
100 |
45 |
10 |
15 |
6 |
20 |
5.4 |
18 |
850 |
|
L400 |
60 |
264 |
30 |
3 |
100 |
45 |
15 |
30 |
6 |
20 |
5.4 |
18 |
850 |
| |
|
H75 |
1.5 |
6.6 |
45 |
4.5 |
150 |
65 |
0.75 |
1.5 |
7 |
23 |
6.1 |
20 |
1550 |
| 75 |
7.5 |
250 |
110 |
1 |
|
H100 |
3 |
13.2 |
53 |
5.3 |
175 |
75 |
1.5 |
3 |
7 |
23 |
6.1 |
20 |
1500 |
| 75 |
7.5 |
250 |
110 |
2 |
|
H125 |
5 |
21.6 |
45 |
4.5 |
150 |
65 |
2 |
5.5 |
7 |
23 |
6.1 |
20 |
1350 |
| 75 |
7.5 |
250 |
110 |
3 |
|
H150 |
10 |
43.2 |
60 |
6 |
200 |
87 |
5.5 |
7.5 |
7 |
23 |
6.1 |
20 |
1250 |
| 75 |
7.5 |
250 |
110 |
7.5 |
|
H200 |
15 |
66 |
45 |
4.5 |
150 |
65 |
5.5 |
10 |
6.7 |
22 |
6.1 |
20 |
1030 |
| 75 |
7.5 |
250 |
110 |
7.5 |
|
H300 |
22.5 |
100 |
53 |
5.3 |
175 |
75 |
10 |
20 |
6 |
20 |
6 |
20 |
960 |
| 75 |
7.5 |
250 |
110 |
15 |
|
H400 |
45 |
200 |
53 |
5.3 |
175 |
75 |
15 |
40 |
6 |
20 |
6 |
20 |
960 |
| 75 |
7.5 |
250 |
110 |
20 |
Pump sets suitable for dirty liquids
|
Pump |
Capacity |
Maximum
Total
Head |
Motor
Rating |
Max.
Total
Suction Lift |
Pump
rev/min |
|
m3/hr |
US gpm |
m
H2O |
bar |
ft
H2O |
lb/in2 |
up to
75 cSt |
2500
cSt |
Water
and to
75 cSt |
2500
cSt |
| hp |
hp |
m
H2O |
ft
H2O |
m
H2O |
ft
H2O |
| |
|
L100 |
2 |
9 |
30 |
3 |
100 |
45 |
1 |
2 |
8.2 |
27 |
5.2 |
17 |
1200 |
|
L125 |
3 |
13.2 |
30 |
3 |
100 |
45 |
1.5 |
3 |
8.2 |
27 |
5.2 |
17 |
900 |
|
L150 |
6 |
26.4 |
30 |
3 |
100 |
45 |
2 |
5.5 |
8.2 |
27 |
5.2 |
17 |
850 |
|
L200 |
10 |
44.4 |
30 |
3 |
100 |
45 |
4 |
7.5 |
7.5 |
25 |
5.2 |
17 |
850 |
|
L300 |
20 |
90 |
30 |
3 |
100 |
45 |
7.5 |
7.5 |
7.5 |
25 |
4.5 |
15 |
570 |
|
L400 |
40 |
180 |
30 |
3 |
100 |
45 |
10 |
30 |
7.5 |
25 |
4.5 |
15 |
570 |
| |
|
H100 |
2 |
9 |
53 |
5.3 |
175 |
75 |
1 |
3 |
8.2 |
27 |
5.2 |
17 |
1000 |
| 75 |
7.5 |
250 |
110 |
1.5 |
|
H125 |
3 |
13.2 |
45 |
4.5 |
150 |
65 |
1.5 |
5.5 |
8.2 |
27 |
5.2 |
17 |
850 |
| 75 |
7.5 |
250 |
110 |
2 |
|
H150 |
6 |
26.4 |
55 |
5.5 |
180 |
78 |
3 |
7.5 |
8.2 |
27 |
5.2 |
17 |
800 |
| 75 |
7.5 |
250 |
110 |
4 |
|
H200 |
10 |
44.4 |
55 |
5.5 |
180 |
78 |
4 |
10 |
7.5 |
25 |
5.2 |
17 |
720 |
| 75 |
7.5 |
250 |
110 |
5.5 |
|
H300 |
15 |
55 |
60 |
6 |
200 |
87 |
7.5 |
20 |
7.5 |
25 |
5.2 |
17 |
650 |
| 75 |
7.5 |
250 |
110 |
7.5 |
|
H400 |
30 |
132 |
60 |
6 |
200 |
87 |
15 |
40 |
7.5 |
25 |
5.2 |
17 |
650 |
| 75 |
7.5 |
250 |
110 |
15 |
The capacity of each Megator positive displacement pump is directly
proportional to the pump speed. Therefore any capacity can be
interpolated from the tables above. The pump curve is therefore a
straight line.
Example
Application = clean water
Total head = 22 metres
Capacity required = 8m3/hr
-
From the clean liquids table select a pump with a
maximum total head equal to or greater than total head required
-
Select a pump with a capacity equal to or greater
than the capacity required
-
Divide the listed pump speed by the listed
capacity
-
Multiply answer by the required capacity
L150 = 10m3/hr
@ 1370 rpm
1370
÷ 10 = 137
8m3/hr x 137 = 1096 rpm
Pump required = L150 @ 1096 rpm
Giving 8m3/hr at a maximum head of 30
metres
The Megator sliding shoe pump delivers its rated capacity at any head
and at any suction lift within its range. The head developed is the head
imposed by the system at the rated flow. A head capacity curve on the
conventional basis would be a vertical straight line.
Intermediate Capacities
For intermediate capacities, the pumps can be run at speeds lower than
those listed in the tables. The head is independent of the speed. The
capacity, and the horsepower at a given head, are approximately
proportional to the speed.
Motor Ratings
The standard motors listed provide for the maximum heads and, in the
case of type H pumps, for an intermediate head. Where the heads are
substantially below those listed , smaller motors can frequently be
used.
Suction Lift
The suction lifts listed assume normal temperature. Installations
combining suction lift with temperatures above normal should be referred
to Megator.
Temperature
The ratings listed in the tables are valid for temperatures up to
38oC (100oF), subject to the above note on suction
lift. Where higher temperatures are involved, it is advisable to
consider them in conjunction with the other working conditions and such
cases should be referred to Megator.
Dirty Liquids
Reduced pump speeds give a markedly increased resistance to wear, and
the high suction ratings are recommended for dirty liquids. Under severe
conditions still lower speeds may provide the most economical
installation.
Standard ratings
Adobe Acrobat PDF format (39KB)
L75-H200 Belt
driven pump dimensions Adobe Acrobat PDF (35 KB)
L75-H200 Belt driven space saver pump
dimensions Adobe Acrobat PDF (74 KB)
L75-H200 Direct coupled
pump dimensions Adobe Acrobat PDF (36 KB)
L300-H300 Belt driven pump
dimensions Adobe Acrobat PDF (92 KB)
L300-H300 Direct coupled pump
dimensions Adobe Acrobat PDF (100 KB)
L400-H400 Belt driven pump
dimensions Adobe Acrobat PDF (36 KB)
L400-H400 Direct coupled pump
dimensions Adobe Acrobat PDF (108 KB)
|
