23 Bentone B 2
General
H
H
5.2.6 Suction pipe tables BFP41L3
5.2.6.1 Overhead Tank
One-pipe system
Height m
Line diameters
4,0 3,5 3,0 2,5 2,0 1,5 1,0 0,5
ø 4 mm 51 45 38 32 26 19 13 6
ø 5 mm 100 100 94 78 62 47 31 16
ø 6 mm 100 100 100 100 100 97 65 32
Two-pipe system
Height m
Line diameters
4,0 3,5 3,0 2,5 2,0 1,5 1,0 0,5
ø 6 mm 33 31 29 27 25 23 21 19
ø 8 mm 100 98 91 85 79 72 66 60
ø 10 mm 100 100 100 100 100 100 100 100
5.2.6.2 Underlying Tank
One-pipe system
For reliable operations, use of a Tigerloop is recommended in underlying
tanks.
Two-pipe system
Height m
Line diameters
0 -0,5 -1,0 -1,5 -2,0 -2,5 -3,0 -3,5 -4,0
ø 6 mm 17 15 13 11 9 7 5 3 1
ø 8 mm 53 47 41 34 28 22 15 9 3
ø 10 mm 100 100 99 84 68 53 37 22 6
The suction line tables comprise theoretically calculated values where
pipe dimensions and oil flow are adapted to prevent turbulent flows from
occurring. Turbulent flows can result in pressure losses and noise in the
pipework. A typical pipe system usually comprises pipe runs with 4 bends, a
non-return valve, a shut-off valve and a pre-filter.
The total resistance of these items is such that it can be disregarded. In the
tables no run longer than 100 m is listed, as experience shows this not to be
required.
The tables apply to standard heating oil of normal grade merchantable
according to existing norms. When starting operations with an empty pipe
system, the pump should not be run without oil for more than 5 min. (This
presupposes that the pump is lubricated with oil when running.)
The tables give the total suction line length in meters with a nozzle capacity of
2.5 kg/h. Max. permissible pressure on the suction and pressure lines is 2.0 bar.
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