Why is the Air Inlet leaking on my Tempest?

Over time, some small grit or dirt can get trapped inside the non-return valve of the Air Inlet, causing it to leak as it can not fully close and let a small amount of water through.

To resolve this issue:

• Unscrew the complete waste valve assembly, you now have access to the air inlet tube.
• Clean the tube and non-return valve using clean water and blowing air through it.
• Fit back to the assembly and to Tempest.