Operating & Service Manual 6 OPS-814 Rev.00
(Reference API 6A Recommended Bolting Torque).
Diagram 4 (c)
Torque Bonnet Cap
Tight (200-300ft/lbs)
Install Socket Set Screw
Shown Out of
Phase 90°
3.4 Lubrication
Fill the valve cavity with lubricant through the injection fitting per Table 1. After removing the grease gun, use a
stinger to open the ball-check in the injection fitting to allow excessive grease to bleed off. Rotate the hand
wheel to help excessive grease bleed out. Lightly grease the bearing assembly through the grease zerk on the
bearing cap. Finally snug tight the bonnet cap install the set screw to lock the bonnet cap down.
NOTE:
1) Recommended procedure for disassembly basically follows the reverse steps as above.
2) Recommended Grease: Moly-Lith No 2 or alternative for bearing, packing seal OD & all threads
(except NPT). DESCO 111-HS or alternative for sealing contact surface of gate, seat, gasket & stem
back seat.
Assembly Drawing:
To be continued