Rattling or metallic noise from inside the lid when steam is released.

Safety first: Allow the cooker to cool and depressurize fully before opening the lid.

• Check valve tightness: Ensure the steam release valve cap is properly seated and tightened according to the manual.
• Inspect float valve: Remove the float valve and verify that its pin and silicone gasket are intact and not excessively worn.
• Tighten inner lid screws: Remove the inner lid plate (if detachable) and tighten any loose screws. Replace missing screws.
• Replace worn parts: If the valve spring or hardware is damaged, install a new Binatone valve kit.