APV DELTA DA3+ SLD, Operating Manual

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20
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
12. Assembly tool for the middle seal
The assembly tool consists of:
- nut
-
thrust ring
- ring with vent nose
- housing
- threaded bolt
Installation of the middle seal in the valve shaft
(fig. 12.1)
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 middle seal with APV food-grade grease.
Then install the seal on the ring.
4. Introduce the ring with the installed seat seal into the housing.
The vent nose 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 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.
Check the even fit of the middle seal.
thrust ring
housing
threaded bolt
valve shaft
middle seal
ring
nut
* For the valves of the series DN125, 150 the assembly
tool in the old design must be used. See fig. 12.2.
valve shaft
nut
seal groove
thrust ring
union ring
ring with
vent nose
housing with
two slewable
brackets
fig. 12.2
fig. 12.1
DN
designation
DA3 - 62
DA3 - 92
D3 - 138
51 - 13 - 210/17
51 - 13 - 211/17
51 - 13 - 676/17
ref.-No.: inch
40
50
65
80
100
125*
150*
1,5”
2”
2,5”
3”
4”
Assembly tool for middle seal (fig. 12.1)