2-3
Packing
Flange
Bonnet
V PTFE Packing
Blind
Plug
PTFE Yarn Packing Graphite + Expanded graphite
V PTFE + PTFE Yarn
V PTFE
Packing
Stem
PTFE Yarn
Packing
Graphite
Packing
Graphite
Yarn
Packing
Lubricator
Figure 2-1 Gland Section
(4) If the valve is provided with a lubricator as shown in Figure 2-2, check whether the
bonnet section has been lubricated or not. To do this, loosen the lubricator handwheel
and turn the squeeze screw. If the squeeze screw turn lightly, and grease in the lubricating
procedure mentioned below. (If the squeeze screw turns heavily, this means that grease
has been applied.)