Watson-Marlow 621CC User Manual
Page 30
Flow rates
Note: Flow rates quoted have been rounded for simplicity, but are accurate to within 5% -
well within the normal tubing-tolerance variation of flow rate. They should therefore be
taken as a guide. Real flow rates in any application must be determined empirically.
620R
Tube bore
Tube number - #
rpm
Pressure (+)
Suction (-)
Flow rates: Marprene, Bioprene (l/min)
mm
6.4
9.6
12.7
15.9
inch
1/4
3/8
1/2
5/8
#
26
73
82
184
7-78 0.09-1.0
0.18-2.0
0.28-3.1
0.37-4.3
8-76 0.10-1.0
0.20-1.9
0.32-3.0
0.42-4.2
8-77 0.10-1.0
0.20-1.9
0.32-3.1
0.42-4.2
8-83
0.10-1.1 0.20-2.1 0.32-3.3 0.42-4.5
15-146
0.20-1.9 0.38-3.7 0.60-5.8 0.80-7.8
17-83
0.22-1.1 0.43-2.1 0.68-3.3 0.90-4.5
26-261
0.34-3.4 0.65-6.5 1.0-10 1.4-11
47-237
0.61-3.1
1.2-5.9 1.9-9.5 2.5-11
50-251
0.65-3.3 1.3-6.3 2.0-10 2.7-11
52-259 0.68-3.4 1.3-6.5 2.1-10
2.8-11
Flow rates: Marprene, Bioprene (USGPM)
mm
6.4
9.6
12.7
15.9
inch
1/4
3/8
1/2
5/8
#
26
73
82
184
7-78 0.02-0.3
0.05-0.5
0.07-0.8
0.10-1.1
8-76 0.03-0.3
0.05-0.5
0.08-0.8
0.11-1.1
8-77
0.03-0.3 0.05-0.5 0.08-0.8 0.11-1.1
8-83
0.03-0.3 0.05-0.5 0.08-0.9 0.11-1.2
15-146
0.05-0.5 0.10-1.0 0.16-1.5 0.21-2.1
17-83
0.06-0.3 0.11-0.5 0.18-0.9 0.24-1.2
26-261
0.09-0.9 0.17-1.7 0.27-2.8 0.37-3.0
47-237
0.16-0.8 0.31-1.6 0.50-2.5 0.67-2.9
50-251
0.17-0.9 0.33-1.7 0.53-2.7 0.72-3.0
52-259 0.18-0.9 0.34-1.7 0.55-2.7 0.75-3.0
Flow rates: Silicone (l/min)
mm
6.4
9.6
12.7
15.9
inch
1/4
3/8
1/2
5/8
#
26
73
82
184
7-78 0.08-0.9
0.19-2.1
0.29-3.3
0.38-4.8
8-76
0.10-0.9 0.22-2.1 0.34-3.2 0.44-4.7
Page 30 of 46
Watson-Marlow Bredel E-Manuals
21/12/2011
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