Installation - Emerson Fisher 667NS2 Instruction Manual

Diaphragm actuator size 45, 70, and 80
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Instruction Manual
D103472X012
Lifting Valve/Actuator Assembly
To lift the valve/actuator assembly, eyebolts should be used. Insert four 3/8 inch shouldered pattern eyebolts
positioned 90 degrees apart on the diaphragm casing flange for size 45 and 70. Use six 7/16 inch shouldered pattern
eyebolts positioned 60 degrees apart on the diaphragm casing flange for size 80. Two nuts are required with one on
each side of the diaphragm casing flange. A longer strap is recommended, so that the angle between the straps
connecting each eyebolt can be smaller, which helps the eyebolts hold more weight. The eyebolt should be ASTM
A489-K04800 or stronger material. Use protective pads between the strap and casing to help prevent damage to the
painted surface. A single hoist lift point on the strap will balance and lift the valve/actuator assembly in a level manner.
For bellows seal valve, the valve/actuator assembly should be lifted using one or more lifting straps that are rigged to
choke around the actuator under the diaphragm casing. If necessary, use additional slings around the valve inlet and
outlet or around actuator legs for body stabilization.
Lifting Valve Only
For guidance on lifting only the valve, please refer to the instruction manual for the applicable valve.
Lifting Actuator Only
Note
For actuators with yoke spacers (key 209), when lifting the yoke spacer and actuator assembly together, follow the previous
instructions for lifting the valve/actuator assembly.
To lift the actuator and accessories, eyebolts should be used. Insert two 3/8-inch shouldered pattern eyebolts
positioned 180 degrees apart on the diaphragm casing flange for size 45 and 70. Use four 7/16-inch shouldered
pattern eyebolts positioned 90 degrees apart on the spring casing for size 80. Two nuts are required with one on each
side of the diaphragm casing flange. The eyebolt material should be ASTM A489-K04800 or stronger material. Use
protective pads between the strap and casing to help prevent damage to the painted surface. A single hoist lift point
on the strap will balance and lift the actuator in a level manner.

Installation

The diaphragm actuator is normally shipped mounted on a valve body. Follow the valve body instructions when
installing the control valve in the pipeline. For information on mounting valve accessories, refer to the appropriate
valve accessories instruction manual.
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
667NS2 Actuator
March 2022
5

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