HIGH PERFORMANCE BUTTERFLY VALVES - MODEL SLHBF & SLHBFFS
Australian Pipeline Valve - Installation, Operation and Maintenance Manual
18
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.
If a gasket seal is disturbed while removing a adjusting gasketed parts, APV
recommends installing a new gasket while reassembling. A proper seal is required
to ensure optimum operation.
Note
Over tightening of the bolts may cause thread damage.
6.6 END COVER REPLACEMENT
For replacement of packing, take the following steps:
a. Remove the bolts and end cover.
b. Remove the gasket.
c. After removing the gasket, clean the neck of the body prior to replacement of new gasket.
d. Insert the new gasket.
e. Put the end cover on & tighten the end cover bolts.
Diagram 8 & 8A are indicative. Refer to as-built drawing.
DIAGRAM 8
DIAGRAM 8A
Gasket
End Cover
Spring Washer
Endcover Bolt
Bearing
Thrust
Ring/
Spacer
Gasket
Bottom Bonnet Flange (where applicable)
Bottom Bonnet Parts (where applicable)
