Instruction Manual
D103031X012
D2 FloPro Valve
June 2011
8
Figure 3. Fisher D2 FloPro Construction
GLOBE STYLE AIR-TO-OPEN
W9005-1
PRESSURE
CONNECTION
VALVE STEM SERRATIONS
VISIBLE IN THE FLOW
ADJUSTER WINDOW
Key numbers are referenced in figures 6 and 7.
Disassembly
1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the
process media from both sides of the valve.
2. For air-to-open actuator action only, apply pressure to the actuator to fully stroke it open. This will raise the plug off
its seat so that the valve stem serrations are visible inside the flow adjuster window (see figure 3). Loosen the socket
head screws (key 29) and lower the flow adjuster (key 14 and 15) to its lowest position on the valve stem. Retighten
the socket head screws (key 29) to 3 NSm(26lbfSin). Relieve pressure to the actuator, shut off all pressure lines to
actuator, and disconnect. Use lockout procedures to be sure that the above measures stay in effect while you work
on the equipment.
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