Our full port sleeved Plug Valves are well suited for handling difficult flow materials such as slurries, brines, mud and sewage. They are excellent for media that tend to scale or precipitate or for high flow rate applications. The sleeve completely surronds the plug, so there are no cavities where material can accumulate and solidify.

link:http://www.cranecpe.com/chem-energy/products/valves/sleeved-plug-valves/xomox-full-port-sleeved-plug-valves