Assembly; Disassembly - Emerson Bettis RTS Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
VCIOM-15429-EN Rev. 1
4.2

Assembly

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4.3

Disassembly

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Assembly and Disassembly
Check that the actuator flange, the linear unit flanges and the valve flange match.
Thoroughly clean screw-on surfaces and bare parts on actuator, linear unit and valve.
Lightly grease the connections of the actuator, the linear unit and the valve.
Grease the spindle of the linear unit.
Move the valve cone in the CLOSED position.
Turn the spindle nut until the linear unit is in a central position.
Mount the linear unit on the valve and tighten the screws crosswise. The coupling
between the linear unit and the valve will be connected later.
Mount the actuator on the linear unit and tighten the screws crosswise.
Extend the spindle by rotating the handwheel until the coupling of the linear unit
and the valve fit together.
Connect the coupling between linear unit and valve.
Use the handwheel to move the linear unit to a center position, to prevent
accidental damage to the valve during start-up.
If the valve is fully closed, move the valve cone to about ten percent OPEN position.
Loosen the screws between the output flange of the actuator and the linear unit
and dismount the actuator.
Open the spindle coupling between the linear unit and the valve.
Loosen the screws between the output flange of the linear unit and the valve.
Dismount the linear unit from the valve.
Section 4: Assembly and Disassembly
July 2021
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