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10.3 Self-closing ball safety function
All IGEMA GmbH shutoff valves are equipped with a self-closing ball function.
The self-closing ball is a safety device which automatically closes valve passage of shutoff
valve if e.g. level gauge is damaged (e.g. mica break).
Fig.1
Ball position during
commissioning or flushing /
purging
Functioning of self-closing ball is only guaranteed if valve is fully opened.
Residues (dirt, welding beads etc.) can put self-closing ball out of action.
Caution
Fig.2
Ball position during normal
operation
Fig. 3
Ball position during glass/mica
break or incorrect
commissioning
23
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