Data Sheet

GX 3--Way Valve and Actuator
Product Bulletin
51.1:GX 3--Way
August 2011
4
LINKAGE-LESS POSITION
FEEDBACK
PUSH-BUTTON INSTRUMENT
SETUP
DVC2000
COVER
INTEGRAL PNEUMATIC
PASSAGEWAYS
Figure 4. Fisher GX 3 - Way and FIELDVUE DVC2000 Digital Valve Controller
Optimized valve and actuator system. Product
simplicity and ease of selection form the foundation
of the GX 3-Way. Mounted with a digital or analog
positioner, the GX 3-Way provides high performance
control across a wide range of process applications.
Compact actuator design. The multi-spring GX
3-Way actuator is a compact robust design. The GX
3-Way design has been optimized to eliminate
complicated 3-way actuator sizing procedures - once
the valve body and port size are selected, the
actuator size is fixed.
Reliable Actuator Performance. Special actuator
diaphragm material helps reduce common problems
such as air oxidation, thermal aging, low
temperature embrittlement, and loss of retention.
The double-sided diaphragm within the actuator
helps eliminate mechanical wear-induced failure.
Modular design. The design architecture has been
optimized to maximize the use of common parts
across sizes. The actuator stem and stem connector
areusedacrossallGX3-Way sizes.
Low lifetime costs. Reduced product complexity,
low parts count, and part commonality all contribute
to reduced inventory and maintenance costs.
Stable flow control. The flow cavity of the GX
3-Way valve body has been engineered to provide
stable flow and reduce process variability. This linear
stability for both converging and diverging flow is
perfectly suited for temperature and pH control
applications.
Live-loaded packing. The GX 3-Way comes with
live-loaded PTFE V-ring packing as standard. The
live-loaded design helps to seal your process to
conserve valuable process fluid, while reducing
emissions to the environment. The long-life and high
reliability of the live-loaded system also reduces
maintenance costs and process downtime. ULF
(ultra low friction) graphite packing is also available
for all sizes and is standard on HT (high
temperature) construction.