Page 17
Complete Assembly
26) Remove the end cap and insert the body gasket/seal.
27) Recheck/re-inspect the sealing faces on ball, body and end cap to ensure they were not damaged
during handling.
28) Replace all damaged body studs. Apply Copper-Based Anti-Seize Grease high temperature com-
pound to the threads.
CAUTION! Never turn a nut more than ¼
turn with out moving to a different body nut.
NOTE:
THE STAR PATTERN IS EXTREMELY IMPORTANT.
33) Cycle the valve manually to verify that it is functioning correctly.
34) Re-torque the packing gland bolts evenly to the values given in Table 2.
32) During the entire initial pull-down the two faces should re-
main precisely parallel. Failure to do so may result in a faulty
seal. Torque in a star pattern to 1/3 of torque value listed in
Table 1. Then torque in a star pattern to 2/3 of torque value
listed in Table 1. Then repeat again at the full torque value of
Table 1. For valves larger than 10 inches, repeat the last
torque values (full torque).
31) Tighten the body studs/nuts evenly, observing the body gasket
pull-down. Using gradually increasing torque levels, tighten oppo-
site bolts using a
star-like pattern
until the body and end cap are
pulled face-to face
.
30) Insert the
new
ValvTechnolo-
gies body seal or gasket into the
body, being certain that the top
surface is precisely parallel with
the body face.
29) Replace Belleville spring,
upstream seat and ball.
Ensure the mate lapped side
is facing the end cap in the
valve body.
