COPES-VULCAN INSTRUCTION MANUAL
MODEL 700 DIRECT-ACTING ACTUATOR
Rev.5 (08/10) Page 6 of
20 Form 01:P224:37
2.0 INSTALLATION
2.1 ON RECEIPT
When the actuator and valve are shipped together, the actuator normally is mounted on the valve.
Follow the valve instructions in the instruction manual when installing the valve in the pipeline. The
actuator may be installed vertically or horizontally either above or below the valve, but, whenever
possible, the valve assembly should be installed with the actuator located above the valve.
If the actuator is shipped separately from the valve, refer to the following instructions for mounting
the actuator to the valve.
2.2 ACTUATOR MOUNTING
There are two available methods of mounting the actuator to the valve bonnet: a screwed ring
using a 2.75"-12UN thread and a stud connection using four 9/16"-12UNC studs. The mounting
styles are not interchangeable. The bonnet and actuator mounting styles must match.
2.2.1 Screwed Ring Mounting Type (Refer to Drawing D-360837)
To mount the actuator on the valve using the screwed ring mounting method:
A. Place the yoke nut on the base of the yoke, then lower the actuator over the valve stem and
onto the valve bonnet.
B. Screw the yoke nut tightly onto the bonnet to secure the actuator to the valve. Use a steel
bar and hammer to engage the cast protrusions of the yoke nut to apply torque.
2.2.2 Stud Mounting Type (Refer to Drawing D-360837)
To mount the actuator on the valve using the stud mounting method:
A. Lower the actuator over the valve stem and onto the valve bonnet.
B. Fully engage the four 9/16"-12UNC studs in the tapped holes in the bonnet. Install the four
lockwashers and hex nuts on the studs. Torque the nuts to 54 ft-lb (73 Nm).
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