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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
13. Assembly Instructions and Tools for Seals
13.4 Middle Seal
The assembly tool consists of:
- nut
- thrust ring
- ring with venting tip
- housing
- threaded bolt
Installation of the middle seal in the valve shaft
1. Insert the valve shaft into the housing making sure that the seal
groove is in the housing.
2. Use the threaded bolt to clamp the shaft into the housing. Clamp
the housing into a vice.
3. Slightly grease the middle seal with assembly grease. Then install
the seal on the ring.
4. Insert the ring with the installed seat seal into the housing. Make
sure that the venting tip is positioned in the seal groove.
5. Insert the thrust ring around the ring in the housing. Screw on the
nut and tighten it with a hook spanner until it stops.
6. Release the nut. Take the ring and thrust ring off the housing.
7. Take the housing out of the vice. Take off the threaded bolt. Detach
the valve shaft from the housing.
Make sure the middle seal fits evenly.
Assembly tool for middle seal
DN Inch Designation Reference number
40 1,5"
DA3 - 62
51 - 13 - 210/17
H207310
50 2"
65
2,5"
3"
80
4" DA3 - 92
51 - 13 - 211/17
H207311
100
thrust ring
housing
threaded bolt
valve shaft
middle seal
ring
nut
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