Reassembly
1. Clean the valve, components, and all critical sealing
surfaces.
NOTICE
Do not use abrasive cleaners on critical sealing
surfaces. Leakage could result.
2. Secure the valve body vertically in a vise.
3. Apply a light coat of P-80 to the back of the seat. Assemble
the seat into body, concave face up.
4. Assemble the slip ring onto the stem with the spiral groove
facing up.
5. Apply a heavy coat of Molykote G-Rapid Plus on the lower
stem neck above the slip ring.
6. Assemble the stem through the body into the stem bore.
7. Assemble the spring into the bottom of the stem
(50 mm bore only).
8. Assemble the spring into bottom of the ball
(50 mm bore only).
9. Orient the ball slot with the stem tab.
10. Push the lower spring into the ball while pivoting the ball to
engage the stem spring (50 mm bore only).
11. Assemble the ball into body and engage with the stem.
NOTICE
Ensure the ball does not fall into the body or the ball
could be scratched. Leakage could result.
12. Ensure both springs are seated in the spring pockets
(50 mm bore only).
13. Apply a light coat of P-80 on back of the seat.
14. Assemble the seat into the ange, concave face up.
15. Assemble the body seal into the body.
16. Clamp the valve body in a vise.
17. Assemble the ange into the body.
NOTICE
Take care not to pinch the body seal. Leakage could
result from the graphite seal. Ensure the seat remains
seated in the ange before torquing to prevent
damage to the seat.
18. Apply a heavy coat of Molykote 1000 to the rst half of the
ange bolt threads.
19. Assemble the ange bolts and nger-tighten.
20. Set the ball to a fully open position using the unassembled
handle.
21. Remove the unassembled handle.
22. Torque the ange bolts to 1200 in∙lb (135 N∙m) in an
alternating pattern of 200 in∙lb (22.6 N∙m) increments.
Lube
or
6
Seat
Slip ring
Lube
Ball
Stem tab
Seat
Flange bolt
Stem
Concave up
Concave up
