24
Bentone
Suction line tables
The suction line tables consist of theoretically calculated
values where the pipe dimensions and oil velocity have
been matched so that turbulences will not occur. Such
turbulences 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 resistances 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 according 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 2,5 kg/h. Max. permissible pressure
at the suction and pressure side is 2,0 bar.
Purging
On 1-pipe systems it is necessary to purge the pump.
On 2-pipe systems purging is automatic through the
return line.
6.1.1 Suction line tables
6.1.1.1 Overlying tank
1-pipe system
0
90
75
56
45
0,5
100
83
63
50
1
110
92
69
55
2
131 109
82
65
3
152 126
95
76
4
172 144 108
86
30
150
22
113
11
56
150
7
37
119
4
23
74
150
33
150
25
126
12
63
150
8
41
133
4
26
83
150
37
150
27
139
13
69
150
8
46
146
5
28
92
150
44
150
33
166
16
82
150
10
55
150
6
34
109 150
50
150
38
192
18
96
150
12
63
150
7
39
127 150
57
150
43
218
21
109 150
14
72
150
8
45
144 150
pe
d (mm)
Nozzle*/Düse*
Gicleur*/Ugello*
(US GPH)
0,50 0,60 0,80 1,00
1,50
2,00
4,00
6,00
9,50
H (m)
4
4
4
4
4
6
4
6
4
6
8
4
6
8
4
6
8
10
*A2L pumps : sum up the 2 nozzles / A2L-Pumpen : Summe der zwei Düsen
pompe A2L : somme des 2 gicleurs / Per le pompe A2L aggiungere n.2 ugelli
Two-pipe system
0
2
15
50
124
0,5
2
16
56
138
1
2
18
61
150
2
3
22
73
150
3
4
26
85
150
4
4
30
97
150
11
38
96
150
7
27
71
150
20
54
116 150
16
46
100 150
12
42
107 150
8
31
79
150
23
61
130 150
19
52
112 150
13
47
118 150
9
34
88
150
26
68
144 150
21
57
124 150
16
56
141 150
11
41
105 150
31
81
150 150
26
69
148 150
19
66
150 150
13
48
122 150
36
94
150 150
31
81
150 150
22
75
150 150
16
55
139 150
42
108 150 150
35
92
150 150
d (mm)
35/45
55
65
75
95
60
77
102
130
150
e
Pump/Pumpe
Pompe/Pompa
Q** (l/h)
4
6
8
10
6
8
10
12
6
8
10
12
8
10
12
14
8
10
12
14
H (m)
**Q = pump capacity @ 0 bar / Pumpenleistung bei 0 bar
capacité de l'engrenage à 0 bar/portata della pompa a 0 bar.
One pipe siphon feed system
Einstranginstallation - Tank höher als Pumpe
Installation monotube en charge
Impianti monotubo a sifone
E
d
E max. = 20 m
(E-H) max. = 4,5 m
H
Two pipe siphon feed system
Zweistranginstallation - Tank höher als Pumpe
Installation bitube en charge
Impianti bitubo a sifone
D
H
D max. = 20 m
(D-H) max. = 4,5 m
Two pipe lift system
d
6.1.1.2 Underlying tank
1-pipe system
With an underlying tank a 1-pipe-system is not recommended
Two-pipe system
e
0
15
50
124 150
0,5
13
44
109 150
1
11
38
95
150
2
7
26
66
138
3
3
14
37
79
8
4
19
11
38
96
150
7
27
71
150
20
54
116 150
16
46
100 150
9
33
84
150
6
24
62
132
17
48
103 150
14
40
88
150
8
29
73
150
4
20
54
115
15
41
89
150
12
34
76
144
5
19
51
107
2
13
37
80
9
28
61
116
7
23
52
100
10
28
60
6
20
44
4
14
33
65
11
28
55
5
14
9
6
14
4
11
d (mm)
35/45
55
65
75
95
60
77
102
130
150
Pump/Pumpe
Pompe/Pompa
Q** (l/h)
6
8
10
12
6
8
10
12
6
8
10
12
8
10
12
14
8
10
12
14
H (m)
Two pipe lift system
Zweistranginstallation - Tank tiefer als Pumpe
Installation bitube en aspiration
Impianti bitubo in aspirazione
H
H max. = 4,5 m
d
Summary of Contents for BENTOFLEX ST 120 KA
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