ECOLINE-VA16
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6 Installation at Site
6.1 General information/Safety regulations
Responsibility for positioning and installing the valve lies with the consultant,
construction company or operator/user. Planning and installation errors may impair
the reliable function of the valve and pose a substantial safety hazard.
6.2 Installation
CAUTION
Welding in close proximity to soft-seated valves
Damage to the seat/disc interface!
▷
Ensure that the valve is not heated beyond the temperature limits specified in
the type series booklet.
Responsibility for welding the valves into the piping and for any heat treatment
required lies with the commissioned company or the plant operator.
Only use fasteners (e.g. to DIN EN 1515-4) and flange gaskets (e.g. to DIN EN 1514)
made of materials approved for the respective valve size. Always use all flange bolt
holes provided when connecting the valve to the pipe. Refer to the type series
booklet for details on flange connections.
NOTE
Exception: DN 65 PN 16
When using
steel flanges to DIN EN 1092-1 in conjunction with cast iron valves with
flanges machined to DIN EN 1092-2, ensure that for nominal size DN 65 classed PN
16 the mating flanges are fitted offset by 22.5°.
Table 8:
Valve bolting DN 65 PN 16
NOTE
For the valves to reach the documented Kv values, the flow direction must
correspond to the flow direction arrow
NOTE
An alternating direction of flow is permitted unless restrictions apply to specific
produtcs.
6 Installation at Site
