Data Sheet

GX 3--Way Valve and Actuator
Product Bulletin
51.1:GX 3--Way
August 2011
10
Principle of Operation - GX 3-Way Actuator
FAIL-DOWN
(STANDARD CONFIGURATION)
FAIL-UP
(OPTIONAL CONFIGURATION)
E0896-3
AIR SUPPLY
AIR SUPPLY
AIR VENT
AIR VENT
Figure 13. Fisher GX 3 - Way Principle of Operation -- Actuator Fail Position
Integrated Air Supply. When mounted with the
DVC2000 digital valve controller, the GX 3-Way uses
an integrated actuator air supply system. In the
fail-down configuration, air is supplied to the lower
actuator casing via a port on the actuator yoke face
-- no tubing is required. In the fail-up configuration,
air is supplied to the upper casing via tubing.