Check the listing for details. SAFETY AIR RELEASE RELIEF VALVE M9 THREAD COFFEE MAKER BIALETTI MOKA RESTYLE. Condition: New. Listed at 18.37 USD. ITEM DESCRIPTION CPUK Part Number: AV07 - 1515028 M9 AIR RELIEF SAFETY VALVE FOR COFFEE MAKER This fixed price listing is for 1 x Air Relief Valve as shown. Suitable for various makes and models of coffee machine including: BIALETTI Thread Size: M9 x 0.8 Thread Length: 4mm Spanner Size: 11mm Please visit our ebay shop to see our huge range of catering parts. All of our parts are sent out same day from our own warehouse stock. If you have any questions please do not hesitate to contact us. We do advise that any parts are diagnosed, installed and tested by a suitably qualified engineer. Catering Parts UK stock a huge line of spare parts to suit all gas and electrical commercial catering equipment, refrigeration equipment, dishwashers and glass washers.