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
TÜV (TA-Luft).
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
test 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
upon safety instrumented systems. Lack of knowledge
of valve position or operation threatens worker safety,
causes environmental concerns, and potentially damages
operating equipment.
Emerson has developed digital valve controllers to meet
customers’ emergency shutdown requirements. As part of
the emergency shutdown valve package, the Fisher digital
valve controller enables automated partial stroke testing
while the valve remains online. Diagnostics reporting
provides automated pass/fail results, an audit trail, and
time stamp.
Fisher SIS digital valve controllers have been certified by
TÜV Product Services (Germany) to be in accordance with
IEC61508 for use in safety instrumented systems up to
safety integrity level 3.
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