Maximum level

The highest physical or piezometric level of the fluid reached in any part of the receptacle when operated continuously under fault conditions.

Interpretation given in Regulators’ Backflow Specification - backflow prevention arrangements and devices: terms relating to backflow prevention 

We use cookies to give you the best possible experience with Water Regs UK. Some are essential to provide website functions and ensure the website is secure. We also use cookies to help us understand how people use the site and to make improvements. Click "Accept All" to enable recommended settings or click "Manage cookies" to adjust your settings. For more details, see our Cookie Policy.