Instruction Manual

Instruction Manual
D103221X012
D3 FloPro Valve
February 2014
13
2. Remove the ten short actuator casing cap screws (key 29).
3. Remove the two long actuator casing cap screws (key 31) by alternating between them as you loosen them. Keep
the upper casing (key 32) level during this procedure.
4. Remove the upper casing and the springs (key 28).
5. Remove the stem nut (key 27) taking care not turn the valve stem (key 16). Keep the valve stem from turning by
inserting a 1/8 inch drift punch in the holes provided on the valve stem.
6. Remove the actuator spacer (key 26), diaphragm O-ring (key 19), diaphragm plate (key 24), diaphragm (key 23),
and the diaphragm washer (key 22).
7. Remove the bonnet locknut (key 20) with a 1-1/2 inch socket wrench and lift off the l ower casing (key 21).
8. RemovethecasingO-ring(key17).
9. Break the bonnet nut (key 5) loose with a hammer. Continue turning the bonnet nut by using a hammer or a large
adjustable wrench, tightened around one ear of the bonnet nut. If the bonnet (key 7) is stuck in the valve, continue
to unscrew the bonnet nut. The bonnet nut will contact the spring pins (or pipe plugs) (key 6, figures 7 or 8) and
jack the bonnet out of the valve. Carefully lift the actuator assembly from the valve body.
WARNING
The spring pins/pipe plugs (key 6) must a lways be in place during valve operation. They provide a safeguard against injury
when the unit is being disassembled.
10. Completely remove t he packing retainer(key8)usinga1-1/8inchwrench.
11. Remove the valve plug (key 3) by driving out the pin (key 43) and unscrewing the valve plug from the stem. Utilize
a 1/8 inch drift punch in the holes provided on the stem to keep the stem from turning as the plug is removed.
12. Remove the five Belleville springs (key 9), lower packing spacer (key 12), packing set (key 11), and two
anti-extrusion washers (key 10) from the bonnet using a formed wire hook.
13. Completely remove the flow adjuster (keys 13, 14, and 15) from the valve stem.
14. Remove the valve stem from the top of the bonnet.
CAUTION
The valve stem must be removed to replace the stem O-ring and the bonnet bushing. If the valve stem is removed, the valve
packing must be replaced since the threads on the valve stem may damage the packing when the valve stem is removed.
15. Remove the stem O-ring (key 25) and the bonnet bushing (key 18).
16. If the hammer nut needs to be removed from the bonnet, the spring pins (or pipe plugs) (key 6, figures 7 or 8) can
be removed with locking pliers.
Spring-to-Open (Air-to-Close)
Key numbers are referenced in figure 8.
WARNING
Observe the warning at the start of the Maintenance section.