Instruction Manual
D104297X012
V270 Valve
September 2018
12
WARNING
When lifting the ball, ensure the bearing plates (key 11) are secure on the ball trunnions to prevent parts from falling which
may cause personal injury or property damage.
12. Use an approved lifting sling through the ball bore to lift the ball (key 3).
a. Lubricate and install the thrust washers (key 17) and bearing plates on both ball trunnions.
b. Install the ball and bearing plate assembly into the body.
c. Guarantee the dowel pins (key 22) in the lower tailpiece have engaged the holes in the bearing plates and that
the ball shaft interface geometry is aligned with the body shaft bore.
d. Note: Specific to the NPS 6 CL150 construction, lubricate and place the follower end thrust washer (key 17) in the
follower end bore of the ball then lubricate and press in the follower end bushing (key 12) prior to installing the
ball assembly into the body. See figure 6.
13. Insert the upper bearing plate dowel pins (key 22) into the intended holes and refer to steps 7 through 10 for the
installation procedure of the upper studs, tailpiece, base bracket, and heavy hex nuts.
14. Insert the drive shaft (key 4) into the body shaft bore and engage the ball interface geometry. Slide the shaft thrust
washer (key 9) into place.
15. Install the drive shaft bushing (key 8) in the packing box from the end that engages the body. Lubricate and install
the o-ring (key 14) in the packing box housing.
16. After lubricating the body shaft bore and thrust washer (key 9), position the packing box housing assembly over the
drive shaft and slide into place ensuring the o-ring (key 14) properly engages the body shaft bore. For all V270
constructions, other than the NPS6 CL150, skip to step 18.
17. Specific to the V270 NPS 6 CL150 construction, inject lubricant into the spring hole of the follower trunnion (key
42) and install the grounding spring (key 40) by pressing firmly into place (see figure 6).
a. Lubricate and install the o-ring (key 41) in the gland of the follower trunnion.
b. Lubricate the body follower bore and install the follower trunnion assembly.
c. Apply anti-seize lubricant to the socket head cap screws (key 43) and tighten in a star pattern to 60 ft
•
lbf.
18. Apply anti-seize lubricant to the packing box housing socket head cap screws (key 10). Thread in all fasteners, but
do not tighten.
19. The packing box holes for the straight pins (key 7) were originally staked at the factory. Use a file to remove the
deformed material at the top of each pin hole to allow the pin to slide by with minimal interference. Lubricate the
straight pins (key 7) and drive each through the packing box housing and into the valve body. When properly
installed and bottomed out, the pin top surface will be slightly below the packing box top surface. Stake all pins in
place making sure the packing box housing material has been deformed within the bore to prevent the pins from
disengaging.
20. Tighten the socket head cap screws (key 10) in a star pattern to the appropriate torque specification (see table 3).
Reinstall the two plastic packing box plugs (key 39) into their respective jack bolt counterbores to prevent
environmental ingress.
21. Install the packing components as detailed in the Packing Maintenance section of this manual.
22. Install the valve shaft key (key 29), flat washer (key 30) and hex head bolt (key 31). The purpose of the washer and
hex bolt is to prevent the key from migrating axially out of the keyway in-service.
