Flowserve TX2 Triple Offset High Performance Butterfly Valve IOM User Manual
Page 10
Flow Control Division
10
11.5 Install the gland follower and tighten it to firmly seat the packing. DO NOT compress the gland follower too
much. Over-tightening may dramatically reduce the life of the packing and may make it more difficult to operate the
valve. The maximum torque of the gland screw as below,
Graphite Packing
Screw Size
Max. Torque
M8
110
Kg-cm
M10
120
Kg-cm
M12
140
Kg-cm
M16
450
Kg-cm
M20
650
Kg-cm
11.4
Install each new ring of packing, use the gland
follower to push each ring of packing evenly into
position after starting it in the stuffing box bore.
Stagger the splice-joints of each packing ring so they
are as far as possible from each other (see example
above). Usually, rotating each ring until the splice is
at 90°
from the previous splice is sufficient. (Fig.14)
Fig 14