Assembly And Installation; Selection Of Vacuum Lines - Grundfos Vaccuperm VGB-103-100 Serie Notice D'installation Et De Fonctionnement

5. Assembly and installation

5.1 Selection of vacuum lines

Warning
Observe section 1. Safety
The vacuum needed for the transport of chlorine gas is built up by
the injector, and maintained by the vacuum lines. Rigid PVC
pipes or flexible PE hoses are used as vacuum lines.
The following tables show the recommended diameter of vacuum
lines, depending on the line length and dosing quantity.
5.1.1 Vacuum lines between vacuum regulator and dosing regulator
Max. length [m] of the vacuum lines between
vacuum regulator and dosing regulator*
0
10
20
30
40
50
75
100
* For the calculation, a pressure loss of p = 12.5 mbar in the vacuum line was assumed.
5.1.2 Vacuum lines between dosing regulator and injector
Max. length [m] of the vacuum lines between
dosing regulator and injector**
0
10
20
30
40
50
75
100
** For the calculation, a pressure loss of p = 50 mbar in the vacuum line was assumed.
instructions.
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DN 8
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Dosing quantity [g/h]
100 250 500
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Dosing quantity [g/h]
100 250 500
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DN 8 DN 8 DN 8
1000 2000 4000
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1000 2000 4000
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