Australian Pipeline Valve - Installation, Operation and Maintenance Manual
14
FLOATING BALL VALVES - BV100 SERIES
Reassembly: -
1. Installation of new seats, packing and seals is recommended, then follow reassembly procedure 4.5
below.
2. For gear operator or power actuator operated: - install the yoke and tighten the screws.
2a. Install key on the stem.
2b. Install gear operator on top flange and tighten the bolts.
3. For lever operated: - install stop plate.
3a. Install retainer/thrust washer.
3b. Install lever.
3c. Install washer and tighten the screw or fit circlip.
This completes the reassembly.
4.4 DISASSEMBLY PROCEDURE
Before removing valve from line ensure valve is in the closed position and line is fully closed off and
drained. Client should observe all industry & regulatory procedures in this process. To disassemble first
remove the operator (4.3.2) then the following steps should be followed with reassembly in reverse
order.
1. Drain & clean valve including contents in cavity.
2. Remove (2) BOLTS from (1) BODY and (4) CAPS.
3. Take off (4) CAPS from (1) BODY and remove (5) GASKET.
4. Carefully remove (15) BALL. Avoid scratching BALL surface.
5. Remove (3) SEATS from BODY and CAP.
6. Remove (11) STEM NUT, (10) LEVER, (9) GLAND NUT, (15) STOPPER, (17) STOP WASHER, (16) SPRING WASHER,
and (8) GLAND RETAINER (parts can vary according to size, class. Refer to as-built drawing).
7. Remove (12) STEM by pulling from inside BODY cavity.
8. Remove (6) THRUST WASHER.
9. Remove (7) GLAND PACKING and (20) STEM SEAL where fitted.
4.5 REASSEMBLY PROCEDURE
Check the packing box for pressurised process fluids even after the valve has been
removed from the pipeline, particularly when removing packing hardware or
packing rings, or removing packing box pipe plug.
1. For reassembly of the disassembled valves, follow the above disassembling procedure in the
reverse order.
2. After cleaning the disassembled parts, reset each part in the original position properly. The
threaded parts should be cleaned thoroughly and applied with lubricating paste.
3. The stuffing box and base of gasket should be thoroughly cleaned with care.
