Brochure

Leaking chemicals and gases can be harmful to health and
to the environment. Accordingly, stringent regulations are
in place to control the amount of fugitive emissions released
into the atmosphere.
Fisher control valve packing technologies ensure compliance
with standards and customer expectations. These
technologies offer excellent emission control capabilities and
were tested and certified by these international certification
organizations: Cetim (ISO 15848-1 Class B), Yarmouth
(FCI/ANSI 91-1), and exida (IEC61508).
The helium mass spectrometer counts each atom of helium
detected through the sniffer probe and calculates a leak
rate. For the Fisher control valve shown above, the total
accumulated leakage over one year would be equivalent to a
bubble the size of a golf ball.
Emerson has multiple packing technologies that are so
unique and novel that they are patented. Fisher packing
technologies are methodically developed with rigorous
testing techniques. These are regarded by our customers as
best-in-class packing that not only comply with emissions
standards, but improve malodorous and harmful plant
environments.
Where zero emissions are required, Fisher bellows
technologies are available in corrosion-resistant materials.
LIMITING EMISSIONSIMPROVING OPERATIONAL SAFETY
Processes that involve toxic or highly flammable fluids rely
on safety instrumented systems (SIS). Lack of knowledge of
valve position or operation threatens worker safety, causes
environmental concerns, and potentially damages operating
equipment.
Emerson has developed FIELDVUE
™
instruments to meet
customers’ emergency shutdown and SIS requirements.
The FIELDVUE SIS digital valve controller enables automated
partial stroke testing while the valve remains on-line.
Diagnostics reporting provides automated results, an audit
trail, and time stamp.
FIELDVUE SIS digital valve controllers have been certified by
exida
®
to be in accordance with IEC61508 for use in safety
instrumented functions up to and including safety integrity
level (SIL) 3. The integral position monitor capability is
suitable for use in up to an SIL 2 safety instrumented
function. A number of Fisher valves and actuators are also SIL
3 capable.
In addition to SIS technologies, Fisher and TopWorx
™
wireless
position monitoring technologies provide operators with
the status of their valves. Position monitoring enables safe
startups and shutdowns, reduces unintentional releases, and
eliminates the need for visual inspection.
4 | Fisher
®
Technology Development