Baker Hughes Masoneilan 525, Инструкция по эксплуатации

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H. Assemble bonnet (10) and body stud nuts (21).
Bonnet must be positioned so the packing flange
studs are at 90° to the flow center line.
Tighten nuts (21) until metal to metal contact is obtained
with proper bolt torque. Refer to Table 1 for proper bolt
torque and tightening sequence specifications.
I. lnsert packing (16) (and lantern ring (17) on valves
equipped with an optional lubricator connection).
Refer to Section 8.5 for proper packing assembly
procedure for standard or optional designs.
J. Install packing follower (12) and packing flange
(13).
K. lnstall packing flange stud nuts (15).
Do not over tighten (See Section “8.5. Packing Box”).
L. If a leak detection connection was installed,
connect it on the lateral NPT port in the bonnet. If
not, insure that the 1/4" NPT plug remained in
place (Figure 2).
M. For actuator assembly and plug stem
adjustment, proceed to the actuator instruction
GEA31593 for 10900 Series Actuators.
9.2 526 (Back Pressure Service)
A. CIean all gasket mating surfaces.
B. Apply a small amount of sealant to the seat ring
threads and sealing shoulders. Install seat rings
into valve body.
NOTE: A sealant compatible with the process should be
applied sparingly.
C. lnstall and tighten seat rings using wrench used
for removal.
Do not over-tighten. Do not strike seat ring lugs directly.
This could distort the seat ring resulting in unwarranted
seat leakage.
NOTE: Valve should be lapped before final assembly. See
Section 8.3.
D. Carefully install plug and stem assembly into
valve body.
E. Install body-blind head gasket
F. Install blind head, carefully inserting lower guide
into lower bushing.
G. Install body gasket (22).
NOTE: Spiral wound body gaskets (22) are standard in the
500 Series design. It is imperative that a new gasket be
installed each time the valve is disassembled.
H. Assemble bonnet (10) and body stud nuts (21).
Bonnet must be positioned so the packing flange
studs are at 90° to the flow center line.
Tighten nuts (21) until metal to metal contact is obtained
with proper bolt torque. Refer to Table 1 for proper bolt
torque and tightening sequence specifications.
I. lnsert packing (16) (and lantern ring (17) on valves
equipped with an optional lubricator connection).
Refer to Section 8.5 for proper packing assembly
procedure for standard or optional designs.
J. Install packing follower (12) and packing flange
(13).
K. lnstall packing flange stud nuts (15).
Do not over tighten (See Section “8.5. Packing Box”).
L. If a leak detection connection was installed,
connect it on the lateral NPT port in the bonnet. If
not, insure that the 1/4" NPT plug remained in
place (Figure 2).
M. For actuator assembly and plug stem
adjustment, proceed to the actuator instruction
GEA31593 for 10900 Series Actuators.
10. Actuators
10.1 Type 10900 Actuators
Refer to actuator instruction GEA31593 for removal,
maintenance, assembly and adjustment.