Mounting The Svi Ii Esd On Rotary Valves - Baker Hughes Masoneilan SVI II ESD Quick Start 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 Masoneilan Camflex* or a Masoneilan Varimax
shows a side view of a Camflex actuator and the SVI II ESD actuator mounting brackets.
Mounting the SVI II ESD on a Rotary Actuator
Tools required:
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 end play from the vacuum position to the fully extended position is less than
0.06 in. (1.524 mm).
© 2018 Baker Hughes, a GE company, LLC. All rights reserved.
Figure 3 Camflex with Mounting Bracket (Side View)
3⁄16" Hex Key
5⁄32" Hex Key
3 mm, 4 mm, 5 mm Hex Key
7⁄16" Wrench
Masoneilan SVI II ESD Quick Start Guide =| 25
*
. Figure 3