Lime storage bins typically have some sort of shut off or isolation valve. In most cases, simple slide gates or gate valves are used. Often it takes hours of hard work with sledgehammers and come-alongs to open or close those valves. This can be a drain on the operations, maintenance, and reliability of [...]

Capping Valves with Fast-Fill System The batch digester opening at the top is either closed with a capping valve or a manual system using a blank may be employed in older mills. Replacing the manual blank with an automated capping Stargate-O-Port-Valve®, which is interlocked with a pressure switch, prevents opening of [...]

For many years, Batch Mill Operations Group struggled with production interruptions. These were caused by inadequate blow valves, blow lines and associated gaskets. After a comprehensive analysis, Fibrelines Engineering and Batch Mill Operations groups determined that shock loads were occurring when residual liquid in the blow lines drained from an adjacent digester. [...]

“The Solution to the Sticking Scale conundrum” Dating back to 1995, Stainless Valve Co. has developed a version of the successful Stargate-O-Port-Valve® AS specifically for black liquor heater isolation for continuous digester and batch digester systems. Depending on the process conditions, species of wood used, and the digester kappa, a different severity of [...]