Wirquin DSY7325 Metro Rapid Round Siphon C-Link, Grey/White, 9/2.25 inch. This siphon is ideal for use in standard size cisterns and features an easily removable upper section for maintenance. It allows for flush volumes to be varied between 6/7/9 litres. It includes a 9" siphon/ c-link 2.25" and is WRAS approved. Weight: 0.661386786 pounds.