Bentone B 40 A2.2 Installation And Maintenance Manual page 26

BENTONE
6.4.2 Underlying tank
1-pipe system
With an underlying tank a 1-pipe-system is not recommended.
Two-pipe system
Pump/Pumpe
e
35/45
Pompe/Pompa
Q** (l/h)
60
d (mm) 6 8 10
H (m)
0 15 50 124 150
0,5 13 44 109 150
1 11 38 95
2 7 26 66
3 3 14 37
4 8
The suction line tables consist of theoretically calculated values where the pipe
dimensions and oil velocity have been matched so that tur-bulences will not
occur. Such tur-bulences will result in increased pressure losses and in acoustic
noise in the pipe system. In addition to drawn copper piping a pipe system
usually comprises 4 elbows, a non-return valve, a cut-off valve and an external
oil filter.
The sum of these individual resi-stances is so insignificant that they can
be disregarded. The tables do not include any lengths exceeding 100 m as
experience shows that longer lengths are not needed.
The tables apply to a standard fuel oil of normal commercial quality accor-ding
to current standards. On commis- sioning with an empty tube system the oil
pump should not be run without oil for more than 5 min. (a condition is that
the pump is being lubricated during operation).
The tables state the total suction line length in metres at a nozzle capacity of
9,5 Gph. Max. permissible pressure at the suction and pressure side is 2,0 bar.
26
55 65
77 102
12 6 8 10 12 6 8 10 12 8
11 38 96 150 7 27 71 150 20
9 33 84 150 6 24 62 132 17
150 8 29 73 150 4 20 54 115 15
5 19 51 107 2 13 37 80 9
138
79 10 28 60 6 20 44 4
5 14 9
19
75 95
130 150
10 12 14 8 10 12 14
54 116 150 16 46 100 150
48 103 150 14 40 88 150
41 89 150 12 34 76 144
28 61 116 7 23 52 100
14 33 65 11 28 55
6 14 4 11
Two pipe lift system
Zweistranginstallation - Tank tiefer als Pumpe
Installation bitube en aspiration
Impianti bitubo in aspirazione
H
d
H max. = 4,5 m