the packings included in the kit.
Be
careful not to damage any threads.
Place the gland into the bonnet.
Proceed to step 10.
9d.
PEEK Packing:
Lubricate the stem
threads, stem shank, and the packings
with MS-LT-WL7. Re-insert the stem
through the bonnet. Lubricate the valve
body threads and the body to bonnet
sealing area with MS-LT-NNS and
place the bonnet assembly onto the
body. Tighten the union nut onto the
body finger-tight. Place one packing
support inside the bonnet and press
it down with a blunt instrument. Be
careful not to damage any stem or
bonnet threads. Insert the lubricated
bottom packing and then the top
packing. Press down into the bonnet.
Insert the second packing support,
press down. Insert the gland and press
down into the bonnet. Proceed to step
10.
All Assemblies:
10. Lubricate the outer threads on the
packing bolt and screw into the bonnet.
11. Lubricate the top (2) or (3) threads on
the bonnet and screw lock nut onto the
bonnet.
12. Place the handle on the stem. Be
certain that the set screw hole is
aligned with the indentation in the stem
before tightening the set screw.
13. Back stem out of the bonnet (2) or (3)
turns, to prevent galling during the
torquing procedure.
14. Torque union nut to body according to
torque chart.
15. Tighten packing bolt to seal packing
against given system pressures.
16. Hold packing bolt in place and tighten
the lock nut against the packing bolt.
Torque Chart
Valve Series
Torque, in.∙lb
(N∙m)
3N
360
(40.6)
3HN, 6N
780
(88.1)
6HN
1080
(122)
12N
2200
(248)
Handle
Lock nut
Panel nut
Union nut
Packing bolt
Gland
Bonnet
Body
Handle
pin
Set
screw
Soft-seat
regulating
stem
Regulating
stem
Ball tip stem
Packing
supports
PTFE packing
Grafoil
packing
1
UHMWPE
packing
PEEK packing
Upper
Lower
1
Number of packings will vary according to valve series.
Repacking Instructions for N and
HN Series Valves
A Swagelok Pre-Engineered Subsystem Fast Loop Module
40