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Certified Emission Control Packing System
The GX, with its live-loaded emission control packing
system, gives you a single valve that you can use
effectively in a wide variety of applications. It meets
elevated temperature requirements, up to 371°C
(700°F), and can handle rigorous mechanical and
thermal cycles.
Live-loaded emission
control packing is standard
in the GX. Choose either
PTFE V-ring or graphite
ULF (ultra low friction).
The GX with live-loaded
graphite ULF packing is
available for all sizes and
is standard on the HT
(high temperature) construction. It is compliant
with both the TA-Luft and ISO (DIS) 15848-1 class
B emission control packing standards. Compliance
to these standards was tested and certified by
TÜV (TA-Luft) and Cetim (ISO 15848-1) third party
agencies. Contact your local sales office for copies of
your GX emission control packing system third party
certifications.
The GX emission control packing system provides
low friction and precise guiding for optimized control
valve performance throughout the life cycle of the
control valve. It maintains superior stem seals to
reduce fugitive emissions.
The innovative stem connection technology within
the GX valve ensures stem and packing alignment for
superior sealing and extended service life.
Bellows Extension Bonnet
The GX bellows extension bonnet provides reliable
and tight stem sealing for those applications where
emissions escaping to the environment cannot be
tolerated. The GX bellows is available in SST (1.4571 /
316Ti) or N10276 and covers a full range of valve sizes
from DN 15 through DN 100 (NPS ½ through 4).
The GX bellows system has been designed for
100,000 full-travel cycles at maximum allowable
pressure and ambient temperature (20°C [68°F]).
The mechanically-formed metal bellows provides high
operating reliability and extended cycle life.
Tight Stem Sealing The GX bellows
design incorporates a rugged double-
or triple-wall construction for added
security. Each bellows has been
tested with helium before it
leaves the factory.