GE Masoneilan 48000 Series, Инструкция по эксплуатации

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9. Valve Body reassembly
After completion of the required maintenance, the valve
should be reassembled using the following procedures:
Note:
If any of the following steps were completed
during maintenance, then proceed to the next step.
A. Clean all gasket mating surfaces.
Note:
Spiral wound seat ring gasket (14) is standard in
48000 Series design. It is imperative that a new gasket be
installed each time the valve is disassembled.
B. Install seat ring gasket (14) in the specified position.
C. Place seat ring (12) on top of the seat ring gasket.
D. Apply a small amount of anti-seize compound
compatible with process to seat ring retainer (13) threads
and bottom surface.
E. Install and screw seat ring retainer into the body by
finger tight.
F. Tighten seat ring retainer with special tool and torque to
the value given in Figure8.
Note: Spiral wound body gaskets (9) are standard in 48000
Series design. It is imperative that a new gasket be installed
each time the valve is disassembled.
G. Install body gasket (9), and insert cage (16) into the valve
body. Be sure to align the hacker of the seat ring retainer
with the slot in the underside of the cage.
H. Install seal rings (10, 11) on plug (15). Open lightly the ring
with precaution and slide them along the plug up to their
seating. Their cutting must be diametrically opposed.
(48200 Unbalance Type valve is not provided with a seal
ring.)
I. Install plug (15) in the cage.
J. Install another body gasket (9) on the shoulder of the
cage.
K. Assemble the bonnet (18) carefully along the plug stem.
L. Coat threads of body studs (19) and the contact surface
between body nuts (7) and bonnet with anti-seize
compound.
M. Tighten the body nuts crosswise and evenly.
N. Insert packing (6) [and lantern ring (20) on valve equipped
with an optional lubricator connection]. Refer to Section
7.3 for proper packing assembly procedure for standard
or optional designs.
O. Install packing follower (5) and packing flange (4).
P. Install packing flange stud nuts (3).
Do not over-tighten (See Section “8.3. Packing Box”).
Q. If a leak detection connection was installed, connect it on
the lateral NPT port in the bonnet. If not, ensure that the
1/4" NPT plug remained in place (Figure 4). Install packing
flange stud nuts (3).
R. For actuator assembly and plug stem adjustment,
proceed to the appropriate actuator instruction manual.
Figure 2 - Typical Installation
Figure 4 - Lubricator Connection
( ptional)
Figure 3 - Seat Lapping Device
Figure 5 - flexible graphite arrangement