172-65400MA-01 (BD2) 21 Apr 2010
9
Disassembly / Reassembly
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
Use the following procedures to remove components. Use the same procedures in
reverse to reassemble.
(Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.)
Removing / Reattaching the Cap
Part
During Disassembly
During Reassembly
Cap Gently turn the cap to remove Being careful not to bend it, gently turn the cap to tighten
Removing / Reattaching the Cover and its Components (Valve Seat Unit)
Part
During Disassembly
During Reassembly
Cover
Remove with a socket
wrench
Consult the table of
tightening torques and
tighten to the proper torque
Disc
Remove, being careful
not to scratch the lapped
surface
Make sure that the seat
surface (lapped side with
groove) is facing down,
toward the valve seat
Disc Holder
Ring
Remove without bending Set on the air vent ring and
make sure that it does not
sit on the valve seat surface
Air Vent Ring Remove without
bending, as it will not
return to its proper
shape
Reinsert without bending
Module Valve
Seat
Remove carefully, being
careful not to scratch the
polished seat surface
Insert into the body levelly,
being careful not to tilt it or
to scratch the seat surface
Outer Module
Gasket
Inner Module
Gasket
Remove with a
screwdriver, or other
suitable tool and clean
the gasket housing
Replace with a new gasket
if damaged
Disassembly / Reassembly of Components Inside the Body
Part
During Disassembly
During Reassembly
Screen Holder Remove with a socket
wrench
Consult the table of tightening torques and
tighten to the proper torque
Screen Holder
Gasket
Remove
Replace with new gasket; coat surfaces with
anti-seize
Screen
Remove without bending
Reinsert without bending
Table of Tightening Torques
Torque
Distance Across Flats
Part Name
N
⋅
m (lbf
⋅
ft) mm
(in)
Cover
250 (185)
46 (1
13
⁄
16
)
Screen Holder
100
(73)
30
(1
3
⁄
16
)
NOTE: - Coat all threaded portions with anti-seize.
(
1 N
⋅
m
≈
10 kg
⋅
cm)
-
If drawings or other special documentation were supplied for the product,
any torque given there takes precedence over values shown here.
Cover
Disc
Disc Holder
Ring
Module
Valve Seat
Air Vent
Ring
Inner
Module
Gasket
Outer
Module
Gasket
