Bottom cap gasket maintenance
The following procedure shall be followed, when replacing the bottom spiral wound gasket (Figure 10).
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1. The bottom cap socket head cap screws (11) shall be loosened and the bottom flange (10) shall be
removed.
2. The spiral wound gasket (9) shall be removed.
3. The spiral wound gasket groove in the bottom cap shall be inspected and cleaned.
4. A thin film of lubricant, Light Mineral Oil, shall be applied on the new spiral wound gasket (9).
5. The spiral wound gasket shall then be inserted on the bottom cap (10), it shall also be centered and
positioned on the body bore.
6. The bottom cap shall be rotated to be accommodated to the correct position and the holes shall be
centered with the threaded holes on the body.
7. A thin film of lubricant by Molykote ® – P74 (Grease) or equivalent shall be applied on the threads of the
screws (11), and they shall be fitted and tightened using the appropriate torque value from the torque
chart A.
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