Swagelok BSH 10 Series, Руководство пользователя, Страница: 15 / 20

15
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 adjusting screw (31) is backed out and not acting on the set spring (24).
2. Loosen the cap screws (29) and remove the spring housing (27).
3. Remove the upper spring guide (25) including the ball (26) and the set spring (24).
4a. For a diaphragm sensor, remove the poppet nut (16) and washer (15) from the sensing assembly and
remove the bottom spring guide (14), clamp plate O-ring (13), diaphragm (12), and clamp plate (11).
Remove the retaining ring (10) from the body then remove the body plate (9) and poppet (8).
4b. For a piston sensor with a piston screw (21) refer to Fig 3. Remove the sensing assembly from the body
(5). Remove the piston (17) from the piston plate (20) then remove the piston screw (21) from the piston
(17) to release the poppet (8) and overtravel spring (22).
4c. For a piston sensor with a poppet nut (16) refer to Fig 5. Remove the sensing assembly from the body (5).
Remove the piston (17) from the piston plate (20) then remove the poppet nut (16) and washer (15) to
release the poppet (8) and O-ring (13).
5. If present, remove the O-ring (6) and backup ring (7) from the poppet (8).
6. Remove the piston O-ring (19), piston plate O-ring (18) and, if present, piston backup ring (23) from the
piston plate (20).
7. Remove the body plug (1).
8. Remove the body plug O-ring (2) and, if present, poppet O-ring (6) from the body plug (1).
9. Remove the seat (3) and seat O-ring (4) using the seat insertion tool.
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.
- Swagelok recommends that dynamic O-rings should be lightly lubricated per Table 2.
NOTICE
All threaded components must be lightly lubricated per Table 2 before reassembly to avoid
galling of threads.