Purging The Enviro-Seal Bellows Seal Bonnet; Parts Ordering - Fisher EWS Series Instruction Manual

Instruction Manual
Form 2376
March 2007
Purging the ENVIRO-SEAL Bellows Seal
Bonnet
The ENVIRO-SEAL bellows seal bonnet has been
designed so that it can be purged or leak tested.
Refer to figure 21 for an illustration of an
ENVIRO-SEAL bellows seal bonnet. Perform the
following steps for purging or leak testing.
1. Remove the two diametrically opposed pipe plugs
(key 16, figure 21).
2. Connect a purging fluid to one of the pipe plug
connections.
3. Install appropriate piping or tubing in the other
pipe plug connection to pipe away the purging fluid
or to make a connection to an analyzer for leak
testing.
4. When purging or leak testing has been
completed, remove the piping or tubing and reinstall
the pipe plugs (key 16, figure 21).

Parts Ordering

Each body-bonnet assembly is assigned a serial
number, which can be found on the valve. This same
number also appears on the actuator nameplate
when the valve is shipped from the factory as part of
a control valve assembly. Refer to the serial number
when contacting your Emerson Process
Management sales office for technical assistance.
When ordering replacement parts, refer to the serial
number and to the 11-character part number for
each part required from the following parts list.
WARNING
Use only genuine Fisher replacement
parts. Components that are not
supplied by Emerson Process
Management should not, under any
circumstances, be used in any Fisher
valve, because they will void your
warranty, might adversely affect the
performance of the valve, and could
give rise to personal injury and
property damage.
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use and maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.
EW Valve
Note
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