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Instruction Manual

D103175X012

GX Valve and Actuator

August 2011

control of the process. Do not expose this product to service conditi ons or variables other than those for which the product was

intended. If you are not sure what these conditions are you should contact your Emerson Process Management sales office

for more complete specifications. Provide the product serial number (shown on the nameplate, figure 2) and all other

pertinent information.

Figure 2. Fisher GX Nameplate Examples (Key 35)

GE41229-D

WITH SPRING INFORMATION

WITHOUT SPRING INFORMATION

GE01296-H

ELECTRIC ACTUATOR

GG12198-A

WARNING

If you move or work on an actuator installed on a valve with loading pressure applied, keep your hands and tools away from

the stem travel path to avoid personal injury. Be especially careful when removing the stem connector to release all loading

on the actuator stem w hether it be from air pressure on the diaphragm or compression in the actuator springs. Likewise

take similar care when adjusting or removing any optional travel stop. Refer to the relevant actuator Maintenance

Instructions.

If hoisting the valve take care to prevent people from being injured in case the hoist or rigging slips. Be sure to use

adequately sized hoists and chains or slings to handle the valve.

1. Before installing the valve, inspect it to be certain that the valve body cavity is free of all foreign material. Clean out

all pipelines to remove scale, welding slag and other foreign material.

2. The control valve assembly may be installed in any orientation unless limited by seismic criteria. However, the

normal method is with the actuator vertical above the valve. Flow through the valve must be in the direction

indicated by the arrow cast on the valve.

3. Use accepted piping practices when installing the valve in the pipeline. Use a suitable gasket between the valve and

the pipeline flanges.

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Emerson Fisher GX Bedienerhandbuch Seite 3