Australian Pipeline Valve - Installation, Operation and Maintenance Manual
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SIDE ENTRY 3P TRUNNION BALL VALVES API6D STANDARD - BVF100 SERIES
5.3 BALL REMOVAL
a- Remove the ball part no. 02 and the support.
part no. 23 through the lateral port.
5.4 SEAT AND SPRING REMOVAL
a- Seats are easily removable from lateral flanges.
b- Ensure the flanges are on a horizontal plane.
c- Lift the seat-ring part no. 04.
d- Remove and clean the springs part no. 08.
6 . 0 I N S P E C T I O N A N D R E P A I R S
The following inspection and maintenance procedures of valve components should be performed by a
professional valve repairer. Replace any parts that are damaged with genuine APV spare parts.
The sampled drawing in Appendix 1 is used as an example to reference parts. However, the Bill of Material
varies according to size, class & trim, hence refer to as-built drawing.
6.1 BODY AND BONNET
a- Clean accurately inside the body. The surfaces shall be free of rust, scale, dirt etc.
b- Clean accurately the body seats with kerosene removing any dirt.
c- Any local scratches shall be smoothed with emery cloth.
d- Inspect bonnet gasket status and replace is damaged.
e- Lubricate gasket area and matching surface with an appropriate thin film of grease.
6.2 SEAT AND SEAT HOUSING
a- Seat housing shall be free of rust, scale, dirt, etc.
b- After cleaning lubricate accurately the seat housing with a thin film of grease.
c- Repeat the operations a & b for the second seat-ring and gasket. Check in particular the status of the
seat surfaces in contact with the ball. Clean accurately and smooth eventual small damages using
emery cloth. Any deep scratch crossing the whole sealing area shall be cause for rejection.
Note
(only for ENP ball): - Keep in mind that if electroless nickel plating is damaged the
ball will require replacement or re-machining and re-plating.
Exploded view upper
stem and seat area
