Reference Manual

Reference Manual

00809-0100-4045, Rev AB

Hardware Installation

March 2016

Hardware Installation

4. Open the Isolate (block) valve to return the device to service.

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 Rosemount manifolds have

this adjustment capability. The Rosemount 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

/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.

A. Bonnet

B. Stem

C. Packing

D. Ball seat

E. Packing adjuster

F. Jam nut

G. Packing follower

Device

Test/vent

(closed)

Isolate

Process

(open)