10 | Baker Hughes
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10. Body Disassembly
Access to the internal components of the body should be
accomplished with the actuator removed.
CAUTION
Prior to performing maintenance on the valve, isolate
the valve, vent the process pressure and vent the
pneumatic actuator. Shut off the supply airline and
the pneumatic or electric signal line.
Note : End gaskets are standard in the 33000 Series design
and it is imperative that new gaskets be installed each time
the valve is disassembled.
Disc Seat 2-piece design
All sizes 150 and 300 and 6in and
above 600 class (Figure 7)
After removing the actuator, disassemble the body using the
following procedure:
WARNING
During assembly or maintenance, and under
operation in some conditions, the operators or
technicians must be alert and aware of all possible
pinch points or areas where there are moving or
sliding components.
A. Disconnect piping from any leak detector port on the valve
body.
B. Remove Seat Ring Cap Head Screw (B915).
C. Remove Seat ring retainer (B105) followed by Seat ring
(B102), seat ring gasket (B103).
D. Remove disc seat flange hex bolt (B913).
CAUTION
Care must be taken to avoid damage to the Disc,
Disc seat and Shaft.
E. Remove Disc seat (B138) and Disc (B137) from shaft.
F. Remove end plate Hex bolt (B913a) clamped to End plate at
the bottom.
G. Remove End plate (B010) and End plate gasket (B015).
H. Remove the Thrust Pad Flange Hex bolt (B915) clamped to
shaft at the bottom.
I. Remove Bearing (B011) and Bearing Protector (B208) from
the end plate side.
J. Remove Gland Hex nut (B201) and the gland (B213) from
top of the body.
K. Remove Gland packings (B206) (see Figure 9) followed
by Gland packing ring (B202), Bearing (B011) and Bearing
Protector (B208).
L. Remove shaft (B123) from the body while holding the disc
seat (B138) and remove the disc seat from the body.
Single Disc 3 and 4 in sizes 600 Class
(Figure 8)
After removing the actuator, disassemble the body using the
following procedure:
WARNING
During assembly or maintenance, and under
operation in some conditions the operators or
technicians must be alert and aware of all possible
pinch points or areas where there are moving or
sliding components.
A. Disconnect piping from any leak detector port on the valve
body.
B. Remove Seat Ring Cap Head Screw (B915a).
C. Remove Seat ring retainer(B105) followed by Seat ring
(B102), seat ring gasket (B103).
D. Remove Set screw (B914) from Disc.
E. Remove End plate Hex bolt (B913a) clamped to End plate at
the bottom.
CAUTION
Care must be taken to avoid damage to the Disc and
Shaft.
F. Remove End plate (B010) and End plate gasket (B015).
G. Remove the Thrust Pad Flange Hex bolt (B915) clamped to
shaft at the bottom.
H. Remove Bearing (B011) and Bearing Protector (B208) from
the end plate side.
I. Remove Gland Hex nut (B201) and the Gland (B213) from
top of the body.
J. Remove Gland packings (B206) (see figure 9) followed
by Gland packing ring (B202), Bearing (B011), Bearing
Protector (B208).
K. While holding the disc seat (B138) remove the shaft (B123)
and shaft key (B929) then remove the disc seat (B138) from
the body.
