Mounting The Svi Ii Esd On Rotary Valves; Camflex With Mounting Bracket (Side View) - GE Masoneilan SVI II ESD Installation And Maintenance Manual

Mounting the SVI II ESD on Rotary Valves

This section describes the procedure for mounting the SVI II ESD on rotary control valves that
have less than 60° rotation, such as a Camflex
a Camflex actuator and the SVI II ESD actuator mounting brackets.
Mounting the SVI II ESD on a Rotary Actuator
Tools required:
3⁄16" Hex Key
5⁄32" Hex Key
3 mm, 4 mm, 5 mm Hex Key
7⁄16" Wrench
To mount the SVI II ESD:
1. Attach the SVI II ESD rotary mounting bracket to the valve actuator using two (2) 5⁄16 - 18
UNC flat-head cap screws. In the preferred mounting position, the long end of the
mounting bracket is on your left when facing the actuator, for any position of the valve
and actuator.
2. Bolt the extension shaft to the valve position take-off shaft using a 1⁄4 - 28 UNF socket
flathead screw. Secure the machine screw holding the extension shaft with a torque of
144 in-lbs (16.269 N-m).
3. On internal valve pressure the thrust shaft is pushed out to the mechanical stops, usually
a thrust bearing. On valves where the valve position take-off is mounted directly on the
end of the plug shaft, a Camflex for example, the shaft must be bearing on its stop to
properly set up the SVI II ESD PST controller. During hydrostatic testing the shaft is thrust
to its stop and a normally tightened packing retains it in that position.
4. On vacuum service, the valve shaft may be drawn into the body by the vacuum acting on
the shaft, but the magnetic coupling must be assembled flush with the mounting bracket
with the shaft pulled fully out to its thrust bearing. Check that the endplay from the
vacuum position to the fully extended position is less than 0.06 in. (1.524 mm)
© 2016 General Electric Company. All rights reserved.
Figure 42 Camflex with Mounting Bracket (Side View)
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or a Varimax . Figure 42 shows a side view of
Masoneilan SVI II ESD Installation and Maintenance Manual
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