Instruction Manual

Instruction Manual
D103221X012
D3 FloPro Valve
February 2014
7
3. Loosen the hex socket head cap screws (key 15) and raise the flow adjustor (keys 13 and 14) to its highest position
on the valve stem.
4. Tighten the hex socket head cap screws to 3 NSm(26lbfSin).
5. Relieve pressure to the actuator and disconnect the air lines. Ensure the flow adjustor i s touching the top of the
bonnet window. Use lockout procedures to ensure the above measures stay in effect while you work on the
equipment.
6. 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.
7. Completely remove the packing retainer (key 8) using a 1-1/8 inch wrench.
8. Remove the valve plug by driving out the pin (key 43) and unscrewing the valve plug from the stem. Utilize a 1/8
inchdriftpunchintheholesprovidedonthestemtokeepthestemfromturningastheplugisremoved.Donot
remove the Belleville springs (key 9) from the stem, in order to retain the Belleville stacking orientation as shown in
figure 3.
9. Use a 1-3/16 inch socket wrench to loosen and remove the seat ring (key 2).
CAUTION
Inspect the seat ring and valve body interior for wear, erosion, or damage in the following steps.
10. Inspect the seat ring for wear or damage. If the seating surface has been damaged, discard the seat ring.
11. Visually inspect the valve body interior below the seat ring for erosion or damage. Replace the valve body if
necessary.
WARNING
Becarefultoavoiddamagingtheseatingsurfaceonthevalveplugorseatringasdamageintheseareaswillallow
excessive leakage at shutoff. Avoid damaging the highly polished valve stem surface. A damaged valve stem could cut the
packing and allow process fluid to leak to the atmosphere.
Cover the opening in the valve body to prevent foreign material from getting into the valve body cavity.
Trim Assembly
Spring-to-Close (Air-to-Open)
1. Ensure the threads of the valve stem (key 16) and valve plug (key 3) are clean and free of debris.
2. Make sure the Belleville springs (key 9) are properly installed on the valve stem, as shown in figure 3.
3. Install the valve plug o n the stem and insert a new pin (key 43).
4. Lubricate the threads of the packing retainer with anti-seize and install into the bonnet using a 1-1/8 inch wrench.
Make sure the Belleville springs (key 9) are completely enclosed by the packing retainer as shown in figure 4.
5. Torque the packing retainer to 81 NSm(60lbfSft). The packing retainer has been installed correctly when a
metal-to-metal contact has been made between the packing retainer end and the bonnet (key 7). The packing
retainer threads should be completely enclosed by the bonnet.