Instruction Manual
D104161X012
D3 Valve with Gen 2 easy-Drive Actuator
February 2021
22
Figure 21. Packing and Belleville Spring Stacking Order
VALVE PLUG, BELLEVILLE SPRINGS, AND PACKING RETAINER CORRECTLY
INSTALLED AND TIGHTENED
BELLEVILLE SPRINGS FULLY ENCLOSED BY
THE PACKING RETAINER
PACKING RETAINER
(KEY 8)
UNTIGHTENED,
NOTE THE GAP
FULLY TIGHTENED,
NO GAP
Valve Plug and Seat Ring Maintenance
Trim Disassembly
Key numbers are referenced in figures 20, 22, and 23.
1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body (key 1), and drain
the process media from both sides of the valve.
CAUTION
The following steps are intended to prevent damage to the valve plug (key 3) and seat ring (key 2) during the removal of the
bonnet and actuator.
For ON/OFF Actuators
2. Command the valve open.
3. Place an open end wrench or a similar obstruction about 6 mm (1/4 inch) thick under the FloPro.
4. Command the valve closed.
For Positioning Actuators
5. Command the valve to anywhere between 10% and 20% travel.
6. Isolate power and signal.
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