HIGH PERFORMANCE BUTTERFLY VALVES - MODEL SLHBF & SLHBFFS
Australian Pipeline Valve - Installation, Operation and Maintenance Manual
17
SOFT SEAT (ENERGISED LIP-SEAL STYLE)
FIRESAFE VERSION
SEAT
SEAT
Pressure
Pressure
Disc closed
Disc closed
Disc closed
Body
Body
Body
Seat
retainer
Seat
retainer
Seat
retainer
Seat
Seat
Seat
Disc closed
Body
Seat
retainer
Seat
(soft)
Gasket
Metal
seat
Preferential Installation
Direction
6.5 PACKING REPLACEMENT
For replacement of packing, please take the following steps:
a. Remove the Gland Flange after loosening the nuts of the gland flange.
b. Slightly lift the packing gland up and remove it.
c. Remove the packing using a packing extractor such as a screw or awl and gimlet.
d. When you remove the packing with tools (packing extractor), be careful not to scratch and damage the
packing housing wall or the valve stem because such damage may cause leakage.
e. Insert a new set of packing in the packing housing after carefully cleaning the packing housing.
f. After inserting the packing, assemble the packing gland and gland flange.
g. The nuts of gland flange should be tightened sufficiently. Be careful not to over tighten the nuts as this
may increase operating torque.
Diagram 7 & 7A are indicative. Refer to as-built drawing.
DIAGRAM 7
DIAGRAM 7A
Gland Bolt/Nut
Spring Washer
Gland Flange
Packing Gland
Packing Tools
(Screw)
Packing
Bush
Packing
Spacer/Bearing
Protector
Bearings
Gland
Ring
PACKING REPLACEMENT
TOP BONNET PARTS
