Series 642
MAINTENANCE
605593EC
Edition 2017-11-24
89/113
7.2
Maintenance procedures
One maintenance procedures are defined for this valve:
•
Replacement of gate seal (gate and bonnet seal) and valve cleaning
Required frequency of cleaning and replacement of seals is depending on process
conditions.
VAT can give the following recommendations for preventive maintenance:
Replacement of
Recommendation
Gate seal (gate and bonnet seal)
Every 100’000 cycles
For spare parts of gate and bonnet seal refer to chapter: «Spare parts»
All pictures in maintenance procedure are sample pictures (DN63…400)