Description Relief valve assembly for an E61 grouphead. Details Compatible Machines La Pavoni: Cellini Classic, Cellini Evolution, Botticelli, and Botticelli Specialty Bezzera: Duo MN, Matrix MN, Magica, Mitica, and Aria Rocket: Appartamento, Appartamento TCA, Mozzafiato, Giotto, and R58 Other Brands: This kit will fit most brand E61 espresso machines that use a two piece top cap assembly. Factory Part Details Factory Number: 7479943 Factory Description: ASSEMBLY RELIEF VALVE Part Explosion Diagrams Pasquini resources page with diagrams and user manuals Questions on this item?Contact us.