Please follow the link to Viega's website for the latest information on spare parts:
​​​​​​​
www.viega.co.uk/en/products/Spare-parts.html

VIDEOS on youtube: 

HOW TO REMOVE A FLUSH AND FILL VALVE ​​​​​​

https://www.youtube.com/watch?v=f-Vw_BgnACw

​​​​​​​​​​​​​​HOW TO REINSTALL FILL AND FLUSH VALVES ​​​​​​​

https://www.youtube.com/watch?v=bdMncR9PeM8

HOW TO INSTALL A FLUSH PLATE with Bowden Cables​​​​​​​

https://www.youtube.com/watch?v=n2oaVSbmCfY