SPX APV DELTA M4, Руководство по эксплуатации

Страница: 22 / 81

17
11. Assembly Tool for Seat Seal
Attention: The assembly tool is just suited to install the
seat seal in single - seat valves.
The assembly tool consists of:
- nut
-
thrust ring
- ring with venting plug
- housing
- threaded
bolt
Installation of seat seal in the valve shaft
1. Insert valve shaft into the housing in such a way that
the seal groove is in the valve housing.
2. Clamp the shaft with the two threaded bolts in the housing.
The housing is clamped in a vise.
3. Slightly grease seat seal with APV food-grade grease.
Then, install seal on the ring with venting plug until it stops.
4. Introduce the ring with the installed seat seal into the housing
and press it down until it stops.
5. Insert the thrust ring into the housing. Screw on the nut and
tighten it by a hook spanner until it stops.
6. Release nut. Pull ring and thrust ring out of the housing.
7. Take housing out of the vise, unscrew threaded bolts.
Take the shaft out of the housing.
Check the right fit of the seat seal.
Installation of seat seal for
change-over/divert valves
Press the slightly greased seal at four spots, the wide side to
the front, into the groove. Lead the seal at the four protuding
loops e.g. with a blunt screw driver into the groove and press it
in by strong thumb pressure. Work alternately at all four loops
to get an even fit. Then smooth the seal with strong pressure, e.g.
with the handle of a screw driver. To vent the seal, prick the thin
blade of a screw driver between the groove wall and the inner side
of the seal down to the groove bottom.
valve shaft MES4
seat seal
nut
thrust ring
ring
seat seal
valve shaft
housing
threaded bolt
Membrane Valve
DELTA M4
Operating Manual Rev. 1
UK