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Disassembly/Reassembly (to reassemble, follow procedures in reverse)
Part & No.
Screen Holder
Remove with a socket wrench
Plug 25
Remove gasket
Screen Holder
Gasket 24
Screen 23
Remove with a needle-nose pliers
Bonnet Bolt 11*
Remove with a socket wrench
Pull straight out being careful not
Valve Unit*
to scratch the valve plug or
scratch or dent the bellows
Lower Bonnet
Remove gasket and clean sealing
Gasket 9*
surfaces on the station body
Remove with a wrench; apply
Blowdown
force to BD2 valve seat
Valve BD2 28
only (see p.11)
BD2
Remove gasket
Gasket 29
* Do not disassemble these parts unless it is necessary.
Lower Bonnet
Gasket
Body
Part & No.
Bonnet Bolt 11
Screen Holder Plug 25
Blowdown Valve BD2 28
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.
During Disassembly
Bellows
Valve Plug
Tightening Torque and Distance Across Flats
N . m
60
60
60
Parts Inspection Procedure
Gasket(s)
Check for warping and damage
Screen
Check for clogging and corrosion
Body Interior
Check for build-up of scale
During Reassembly
Consult the table of tightening torques
and tighten to the proper torque
Replace with a new gasket; coat surfaces
with anti-seize
Reinsert being careful not to bend or warp
Consult the table of tightening torques
and tighten to the proper torque
Insert the valve plug into the body, being
careful not to scratch the valve plug or
scratch or dent the bellows
Replace with a new gasket
Consult the table of tightening torques
and tighten to the proper torque
Replace with a new gasket; coat surfaces
with anti-seize
Valve Unit
(lbf . ft)
mm
(44)
12
(44)
22
(44)
22
(in)
(
15
)
32
(
7
)
8
(
7
)
8
1 N . m
10 kg cm
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