Swagelok BD2 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 knob assembly (21) is backed out and not acting on the set spring (16).
2. Unscrew the spring housing or dome (18) from the body (1).
3. BS(H)2 series only - Remove the spring guide (17), set spring (16), and bottom spring guide (15).
4. Remove the sensing assembly then remove the O-rings (13, 26) from the piston plate (14).
5. Push the piston (10) out of the piston plate (14) and remove the piston O-ring (11) and, if present, piston
back up ring (12).
6. Unscrew the piston screw (7) and remove the overtravel spring (9) and poppet (8) from the piston (10).
7. Remove the body plug (6), seat (4), seat O-ring (3), and seat retainer (2) from the body.
8. Remove the O-ring (5) from the body plug (6).
9. BS(H)2 series only - To remove the knob assembly (21) remove the C-ring (19) then fully unwind the
handle from the spring housing (18).
BD2 series only - To remove the dome plug (27) unscrew it from the dome (18) using the dome plug
insertion tool. The dome plug O-ring (28) can then be removed from the plug.
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 3.
NOTICE
All threaded components must be lightly lubricated per Table 3 before reassembly to avoid
galling of threads.