24
APV_SD4_ATEX_UK-0_122018.indd
UK
Double seal valve
DELTA SD4-ATEX
Instruction Manual: UK - rev. 0
APV
15. InstallationofSeatseal
By means of the assembly tool, the seat seal (11) can be installed,
only (see fig. 15). At first, this seat seal must be mounted onto the
valve shaft.
Afterwards, the seat seal (12) must be manually inserted into the
groove, see item 15.2.
Theassemblytool(fig.15.1)consistsof:
- nut
- thrust ring
- ring with venting nose
- housing
- threaded bolt
15.1 Installationofseatsealinthevalveshaft
1. Insert the valve shaft into the housing in such a way that
the seal groove is in the housing.
2. Clamp the shaft into the housing by means of the threaded bolt.
Clamp the housing into a vice.
3. Slightly grease the seat seal with APV assembly grease.
Then install the seal on the ring with the venting nose until it stops.
4. Introduce the ring with the installed seat seal into the housing and
press it down until it stops sensibly.
5. Insert the thrust ring into the housing. Screw on the nut and tighten
it with a hook spanner until it stops.
6. Release the nut. Take ring and thrust ring off the housing.
7. Take housing out of the vice, take off the threaded bolt.
Detach the valve shaft from the housing.
Checktheevenfitoftheseatseal.
Tosimplifytheinstallationoftheseatseal,thefollowing
assemblytoolsareavailable:
Assemblytoolforseatseal
DN Inch ReferenceNo. IDNo.
25 1" 000 51-13-200/17 H203861
40 1,5" 000 51-13-201/17 H203862
50 2" 000 51-13-202/17 H203863
2,5" 000 51-13-203/17 H203864
65 000 51-13-204/17 H203865
3" 000 51-13-205/17 H203866
80 000 51-13-206/17 H203867
100 4" 000 51-13-207/17 H203868
housing
valve shaft
threaded bolt
seat seal
ring
nut
thrust ring
valve shaft
seat seal (11)
seat seal (12)
fig.15.
fig.15.1.