PRESTIGE READY TO SERVE INDICATORS/ SAFETY VALVES PKT OF 2 REF 96410
The 'Pintle' in the Ready to Serve indicator is designed to rise when the cooking cycle has begun, and drop when the lid can be removed.

It also acts as a safety valve giving three separate levels of safety protection. Ensure the 'Pintle' valve moves freely and the rubber seal is fitted the right way up. Always refer yo your instruction booklet.