Place top plug (3.1) and three sleeves
(10.1, 10.2, 10.3) onto the plug stem
one after the other.
DN 65 and 80
Insert bottom plug (3.2) into the body.
Use the seat wrench to screw in the bot
-
tom seat (2.2) and top seat (2.1) one af
-
ter the other:
Valve
DN 65 and 80
Seat thread
M90 x 1.5
Tightening torque
1050 Nm
Place top plug (3.1) and four sleeves
(11.1, 11.2, 11.3, 11.4) onto the plug
stem one after the other.
4. For valves in DN 32 and larger, insert
bottom plug into bottom seat.
Insert body gasket (1.2) into body
flange.
Carefully place the bellows housing
(5.2) onto the body, while guiding the
plug stem (6).
Hold the plug in the seat to push the
plug stem in the middle through the plug
bore.
5. First place the washer (12.1) and then
the pair of serrated lock washers (12.2)
onto the plug stem, making sure the
coarsely serrated surfaces of the lock
washers face each other and the radial
ribs face outwards.
Finger-tighten the nut (12) onto the plug
stem.
Note: For nominal sizes DN 15 to 50, a
special tool designed to hold the washers
(12.1 and 12.2) can be ordered from
SAMSON (see table).
Especially on valves in nominal sizes DN 15
to 25, it is difficult to install the washers on
the plug stem due to insufficient clearance.
6. Slightly pull out the bellows housing
(5.2) together with the bellows assem-
bly. Place an open-end wrench at the
side on the hexagon or the flattened part
Maintenance–replacing parts
18 EB 8135/8136 EN
12.1
12.2
12
11.1
11.2
11.3
11.4
2.1
3.1
3.2
2.2
Fig. 15 · Diverting valve DN 65 and 80
12.1
12.2
12
11.1
11.2
11.3
11.4
3.1
3.2
Fig. 16 · Diverting valve DN 32 and 50
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