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ECOLINE-VA16
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9 Trouble-shooting
WARNING
Improper remedial work on the valve
Risk of injury!
▷
For any work performed in order to remedy faults on the valve observe the
relevant information given in this operating manual and/or the product
literature provided by the accessories manufacturers.
If problems occur that are not described in the following table, consultation with the
KSB
customer service is required.
Table 9:
Trouble-shooting
Problem
Remedy
Leakage at the bonnet/cover gasket
Re-tighten the screwed bonnet and/or fit a new joint
ring.
Leakage at stem seal
Re-tighten the stuffing box bolts. If leakage goes on, the
packing should be replaced.
Leakage at the seat/disc interface
Dismantle bonnet bolting, rework the seating faces of valve
disc and body using a suitable reseating tool
Continue reseating until the seating faces exhibit a
consistently smooth and even ring
Leakage at the seat/disc interface with PTFE disc
Dismantle bonnet bolting, replace the seal ring at valve
disc.
9 Trouble-shooting