Samson 3251-E, Mounting And Operating Instructions

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EB 8052-E EN 5-17
Installation
2
15
92
60
5.1
8
2 Valve bonnet
5.1 Plug or piston stem
8 Threaded bushing
15 Packing
60 Yoke
92 Castellated nut
Fig. 5-7: Standard/HT packing with threaded
bushing
LLF 20 packing (packing gland)
1. Gradually tighten the guide bolts (163.1)
of the spring loading assembly (163) at
the hex head clockwise in a crisscross
pattern (
1 /
8
turn at a time) until the correct
alignment of the guide bolts (163.1) to
the packing gland (162) is achieved.
The groove at the bottom of the guide
bolts (163.1) is flush with the bottom of
the packing gland (162). See Fig. 5-8.
2. Open and close the valve several times.
3. Check the valve for leakage to the atmo-
sphere.
Î
If the adjustable packing does not seal
properly, contact our after-sales service.
Î
If tightening of the adjustable packing is
no longer possible because it has its
elasticity (see Fig. 5-11), it must be re-
placed (see the 'Servicing' section).
5.1 8 164 163.1
163.2
162
2
92
Fig. 5-8: LLF 20 packing tightened correctly
5.1 8 164 163.1
163.2
162
2
92
Fig. 5-9: LLF 20 packing tightened too far
5.1 8 164 163.1
163.2
162
2
92
Fig. 5-10: LLF 20 packing not tightened far
enough