ARI Armaturen STOBU PN63-160 EN - Manual (Page 12)

Page 2-12 Rev. 0040102002 0213
Operating and installation instructions
STOBU
®
PN63-160
6.0 Putting the valve into operation
When putting the valve into operation, the tightness of the stuffing box seal (pos. 6) must be
checked.
If the valve stem / stem unit (pos. 4) leaks, gradually tighten the stuffing box seal (pos. 6)
evenly in increments by means of the hexagon nuts (pos. 19) until leaking stops (refer also
to item 7.0 Care and maintenance).
ATTENTION !
- Before putting the valve into operation, check material, pressure, temperature
and direction of flow.
- Regional safety instructions must be adhered to.
- Residues in piping and valves (dirt, weld beads, etc.) inevitably lead to leakage.
- Touching the valve when it is operating at high (> 50 °C) or low (< 0 °C) media
temperatures can cause injury.
Affix warning notice or protective insulation as appropriate.
- To prevent hydraulic jerks with a liquid medium, you must not slam valves
closed. If necessary, chokes or dampers must be fitted.
Before putting a new plant into operation or restarting a plant after repairs or
modification, always make sure that:
- All works has been completed.
- The valve is in the correct position for its function.
- Safety devices have been attached.