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APV_DA4_UK-1_102018.indd
UK
Double Seat Mix Proof Valve
APV DELTA DA4
Instruction Manual: UK - rev. 1
APV
14. Trouble Shooting
15. Spare Parts Lists
The reference numbers of the spare parts for the different valve
designs and sizes are included in the attached spare parts drawings
with corresponding lists.
Note!
Accompanying products: Column 4 "to be added to spare part
order" indicates the position numbers of the parts which have to be
ordered together with the part which you intend to replace.
Please indicate the following data to place an order for spare parts:
- number of required parts
- reference number
- designation
Data are subject to change.
Failure Valve position Required seal replacement
closed open
Leakage at upper housing ange x x upper housing seal (12)
Leakage from the leakage bore
between the connecting ports
x x lower housing seal (12) and
seat seals (11)
Leakage from the yoke x x upper shaft seal (13, 14) and
seal of ushing chamber (15)
Leakage from the inside of the lower
valve shaft
x seat seals (11) and
upper shaft seal (13, 14)
Leakage from the inside of the lower
valve shaft
x middle seal (10)
Leakage at the outside of the lower
valve shaft (remove spray connection
for this purpose)
x x lower shaft seal (13, 14)
The position numbers refer to the spare parts drawing.
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