Samson 3248-1, Монтаж и эксплуатация

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Plug:
Caution!
Do not twist the bellows!
1. Use SAMSON socket wrench to unscrew
the bellows nut (6.4). Pull plug stem ex-
tension together with the bellows seal,
guide bushing (6.6), and the plug stem
and plug out of the cryogenic extension
bonnet.
2. Used a suitable tool to clamp the cryo-
genic extension bonnet tightly.
3. Unthread the plug out of the extension.
4. Loosen nut (6.7). Unscrew guide bushing
(6.6). In the case of large nominal sizes,
unscrew second nut and remove guide
bushing.
Note! There is no guide bushing (6.6) in
valve sizes NPS 4 and 6/Class 150 - 300,
version with split plug stem extension.
5. Apply lubricant (order no. 8150-0116)
to the plug stem thread of the new or
original plug that has been machined.
6. Screw guide bushing (6.6) onto the plug
stem extension as far as it will go. Lock
into position with the nut (6.7) or slide
on the guide bush and fasten with two
nuts.
7. Check that both washers (6.8) are still in
the plug stem extension. Screw the plug
stem tightly into the plug stem extension.
Tightening torque: 50 Nm with DN 25
to 80 and 80 Nm with DN 100 to 150.
Seat:
If the seat must also be replaced, proceed as
follows:
8. Use a SAMSON seat wrench to unscrew
the seat (2) out of the valve body.
9. Apply lubricant (order no. 8150-0116)
to the seat thread of the new seat and
screw in tightly observing the tightening
torques in Table 1.
Assembly:
1. Slide plug stem extension together with
guide bushing and plug into the body.
2. Insert bellows nut (6.4) and screw tight
(observing tightening torques in the table
below). Make sure that no torque is
transmitted to the bellows.
10
EB 8093 EN
Maintenance
Table 1 Tightening torque Nm or steel and aluminum version
Nominal size Seat (2)
Bellows nut
(6.4)
Body nut
(5.3)
Body nut (1.3)
only with aluminum
angle valves
DN NPS Red. seat bore Max. seat bore
15 to 25 ½ to 1 150 150 200 30 20
32 to 50 1½ to 2 450 400 1000 60 30
65 to 80 2½ to 3 900 850 2000 100 60
100 4 1400 1050 3000 100 100
150 6 2300 2100 3000 100 100