86
Reference Manual
00809-0100-4803, Rev GA
Installation
September 2017
Installation
Adjusting valve packing
Over time, the packing material inside a Rosemount manifold may require adjustment in order to
continue to provide proper pressure retention. Not all manifolds have this adjustment capability. The
manifold model number will indicate what type of stem seal or packing material has been used.
The following steps are provided as a procedure to adjust valve packing:
1. Remove all pressure from device.
2. Loosen manifold valve jam nut.
3. Tighten manifold valve packing adjuster nut
1
/4 turn.
4. Tighten manifold valve jam nut.
5. Re-apply pressure and check for leaks.
6. Above steps can be repeated, if necessary.
If the above procedure does not result in proper pressure retention, the complete manifold should be
replaced.
Figure 3-16. Adjusting Valve Packing
4. Open the Isolate (block) valve to return the transmitter to
service.
A. Bonnet
B. Ball seat
C. Packing
D. Stem
E. Packing adjuster
F. Jam nut
G. Packing follower
Transmitter
Isolate
Vent
(closed)
Process
(open)
A
D
C
B
E
F
G
To Next Page