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APV_DKR2_DE-9_032019.indd
Double Seat Ball Valve
DELTA DKR 2
Instruction Manual: UK - rev. 9
APV
UK
14. Detection of Seal Damage
If damaged seals are exchanged, generally replace all seals.
For valve maintenance we supply complete seal kits (see spare parts
lists).
15. Spare Parts Lists
(see annex)
The reference numbers of the spare parts for the different valve
designs and sizes are included in the attached spare part
drawings with corresponding lists.
Please indicate the following data to place an order for spare parts:
- number of required parts
- reference number / ID number
- designation
subject to change
Failure
Remedy
Valve is closed and pressurized
Leakage at pipeline flange
Replace seal (8).
Leakage from the leakage drain
1. Check adjustment of valve ball according to
Service Instructions 12.5.
2. Replace seals (8, 9, 7).
Valve is open
Leakage from the leakage drain
1. Check adjustment of valve ball according to
Service Instructions 12.5.
2. Replace seals (8, 9, 7).
Valve is closed and leakage during cleaning via the spray connection
Leakage at spray connection
Replace o-rings (12).
Leakage at shaft bearing
Replace guide bands (4) and o-rings (5, 6)
according to Service Instructions 12.3.
