Australian Pipeline Valve - Installation, Operation and Maintenance Manual
10
IRON GATE & GLOBE VALVES - SL201, SL600, SL601
*Model SL600 and SL201 may have O-ring seals in lieu of packing, dependent on size and class.
12.3 STEM REPLACEMENT & VALVE DISASSEMBLY
To replace the stem when the valve is completely disassembled for general maintenance follow this
procedure:
• Open valve half way then remove bonnet bolts and nuts.
• Lift up the bonnet to remove disc or wedge.
• With the bonnet removed, unscrew the gland bolts then lift up gland flange exposing the stem packing.
• Remove stem packing above the lantern ring (if so required) and then turn the hand wheel to force the
stem down.
• Remove the stem through the stuffing box.
Also refer to 7.0
12.4 VALVE REASSEMBLY
The procedure to reassemble the valve is as follows:
Re-insert the stem through the stuffing box taking special care to reassemble parts in sequence. Next,
insert the packing (or seals) into the stuffing box and compress using the gland and flange. Then,
reassemble nuts and tighten.
Always be sure that the valve is de-pressurised and isolated prior to performing
any maintenance work. Do not attempt to repair valve in-line if volatile, dangerous,
hazardous or flammable service. Always wear fully enclosed, splash proof,
protective eye wear.
Note
The stem packing style will vary according to valve size, type and class as well as
the stem packing material specified.
STUFFING
BOX*
PACKING
GLAND
GLAND
FLANGE
DIAGRAM 1
