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Version 0 • Dokument-Nr. 74572811
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5.1 Installation conditions
In order to ensure trouble-free functioning of the valve, pay attention in the provided range of the fitting:
▪that the piping system must be routed, that damaging shear and bending stresses can not affect the valve
body.
▪that there is enough free space available, that the operation of the hand lever, the hand wheel and the emer-
gency and switching devices is easily possible.
>
The valve must be installed between pipeline flanges according to DIN 2501 or ANSI B16.5. It should be
taken into account, that a valve which is designed for a particular flange standard cannot be normally used
for other flanges.
>
If pipeline flanges are to be used which are not in accordance with the specifications of the order, the manu-
facturer is to be consulted.
>
Pipelines always have to be run in such a way that damaging shear and bending stresses cannot act on the
valve body.
>
The surfaces of the pipeline flanges between which the valve is installed have to be parallel to one another,
the sealing surfaces must be clean and without damage. No cross marks may be visible.
>
Flanges and pipes must not be completely welded when the valve is installed, as the valve can be dam-
aged.
>
The valve is installed with two suitable seals between two pipe flanges.
>
Screws, nuts and seals are not included in the manufacturer scope of supply, but must be available during
installation. All flange gaskets intended for the application can be used.
>
The "clearance" of the mating flanges - including inner coating - has to be sufficient to allow the disc to be
fully opened without touching (ØDi ≥ ØL + 6 mm). This must be checked before the valve is installed and
compared with the space necessary for the valve according to the table.
DN
D
ØL
X
Y
50
43
46
8
2
65
46
59
13
10
80
46
76
21
15
100
52
93
26
24
125
56
118
38
31
150
56
139
48
41
200
60
190
71
62
250
68
238
93
80
300
78
281
110
95
350
78
321
130
115
400
102
363
139
128
500
127
468
180
168
600
154
542
202
199
