TLV BB1N, Instruction Manual

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172-65143M-04 (BB1N·BBF1N) 7 Oct 2021
9
Disassembly/Reassembly of the Valve Unit Gland Section
Part During Disassembly During Reassembly During Inspections
Holder Screw Remove with a hex key For stainless steel valve
bodies, coat the threaded
portions with anti-seize
and tighten to the proper
torque
—
Holder Remove with a socket
wrench For stainless steel valve
bodies, coat the threaded
portions with anti-seize
and tighten to the proper
torque
—
Guide Bushing Remove guide bushing Reinsert guide bushing Check for wear
Seal Remove the seal Use a new part
—
Stem Packing Remove the packing Use a new part
—
Spindle Remove the spindle Reinsert the spindle Check both faces for
deformation. Check
for wear, damage and
corrosion
Valve Shaft Remove the valve shaft Reinsert the valve shaft Check for wear or
deformation
Gland Seat Remove the gland seat Use a new part
—
Washer Remove the washer Reinsert the washer Check for damage or
deformation
Belleville
Washer Remove the Belleville
washer Reinsert the Belleville
washer, referring to the
drawing on the following
page for proper orientation Check for damage or
deformation
Gasket Remove the gasket and
clean sealing surfaces Replace with a new gasket
if damaged or deformed,
referring to the drawing on
the following page for
proper orientation.
—
(1 N·m

10 kg·cm)
NOTE: 1. Reassemble the gland section after reassembling the valve section (see the
Disassembly/Reassembly of the Valve Section in the Disassembly/Reassembly
section).
2. When reinserting the spindle and valve shaft into the ball:
for the screwed model, finger-tighten the inlet union; for the flanged model, finger-
tighten the flange bolt. This serves as preparation for centering the ball.
When reassembly is completed, tighten the valve holder.