172-65530MAJ-04 (P46/65 Series + BD2) 6 Oct 2021
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, 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
Remove with a
screwdriver, or other
suitable tool and clean the
gasket housing
Replace with a new gasket
if damaged
Inner Module
Gasket
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 the gasket and
clean sealing surfaces
Replace with a new gasket; coat surfaces with
anti-seize
Screen
Remove without bending Reinsert without bending
Table of Tightening Torques
Part
Torque
Distance Across Flats
N
m
(lbf
ft)
mm
(in)
Cover
P46SRN/P46SRM/P65SRN
250
(185)
46
(1
13
∕
16
)
P46SRW
320
(235)
55
(2
5
∕
32
)
Screen Holder
100
(73)
30
(1
3
∕
16
)
NOTE: -Coat all threaded portions with anti-seize.
-If drawings or other special documentation were supplied for
the product, any torque given there takes precedence over
values shown here.
(1 N
m
10 kg
cm)
Cover
Disc
Disc Holder
Ring
Module
Valve Seat
Air Vent
Ring
Inner
Module
Gasket
Outer
Module
Gasket
