Swagelok TBVS4, Руководство пользователя

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12
Disassembly
- The following instructions describe how to fully disassemble the regulator for the purposes of
maintenance and repair.
- Note that not all components listed appear in all regulator configurations.
- Only disassemble the regulator as far as is required to replace the components supplied in the
maintenance kit.
- Discard all components being replaced.
1. Ensure the set screw (18) is backed out and not acting on the set spring (13). It can be fully removed, if
required, by unwinding counterclockwise until it detaches from the spring housing assembly (15).
2. Loosen the cap screws (16) and remove the spring housing assembly (15).
3. Remove the diaphragm nut (12), lock washer (11), diaphragm plate (10), and diaphragm (9) from the
poppet (6).
4. Unscrew the seat retainer (7) and remove the assembly from the body (3).
5. Unscrew the clamp ring (8) from the poppet (6).
6. Remove the seat retainer (7) from the poppet (6).
7. Remove the seat (5) and seat seal (4) from the body (3).
Points of Attention Before Reassembly
- Visually inspect all components for abnormal wear or damage. Replace components in case of doubt.
- All parts must remain clean and undamaged before starting assembly.
- Maintenance kit components will be supplied preassembled where practicable to aid reassembly.
- Swagelok recommends replacing all O-rings removed during disassembly.
NOTICE
All threaded components must be lightly lubricated per Table 2 before reassembly to avoid
galling of threads.
Reassembly
1. Lightly lubricate the central hole of the seat retainer (7).
2. Insert the poppet (6) through the seat retainer (7).
3. Lightly lubricate the poppet thread (6), then fit the clamp ring (8). Torque to 3.5 lbf·ft (5 N
· m).
4. Fit the seat (5) and seat seal (4) over the poppet (6) and into the seat retainer (7). Ensure they are
oriented correctly per Fig 2.
5. Lightly lubricate the seat retainer thread (7) then install into the body (3).
6. Secure the body (3) in a vise.
7. Torque the seat retainer (7) to 7 lbf·ft (10 N
· m).
8. Place the diaphragm (9) then diaphragm plate (10) on to the clamp ring (8).
9. Lightly lubricate the clamp ring thread (8) then retain using the lock washer (11) and nut (12). Torque to
3.5 lbf·ft (5 N · m).
10. Lubricate the central recess of the spring guide (14).
11. Stack the set spring (13) and spring guide (14) onto the diaphragm plate (10).
12. Place the spring housing assembly (15) over the spring (13).
13. Lightly lubricate the cap screws (16). Secure the spring housing assembly (15) to the body (3) using the
cap screws (16), washers (2), and nuts (1). Torque to 7 lbf·ft (10 N · m).
14. Lightly lubricate the set screw (18) thread. Fit the nut (17) onto the set screw (18) and install it into the top
of the spring housing assembly (15).