Ramén has a solid experience within this segment. As a matter of fact our history began in the Swedish pulp and paper industry in the 1960’s. At the time, an efficient control valve solution for fibre suspensions was lacking. Previously the conventional solution was to install a knife-gate valve which was good enough for ON-OFF service by hand or used with pneumatic cylinders. The problem was that this solution was insufficient for high pressures, high temperatures and dangerous fluids. It also required costly investments since it could only be automated using expensive electric actuators. Based on this knowledge the Swedish engineer Torsten Ramén initiated the development of a new control valve to be used especially for accurate control of fluids containing fibres within the paper and pulp industry – and that is how the Ramén Ball Sector Valve came to life.

The valve is designed for precision control of the pulp flow to the paper machine and it has proven to be extremely reliable in numerous installations all over the world. Typical applications include basis weight control, exact control of vacuum to dewater fibre suspension, handling fibre suspensions from waste paper recycling and highly abrasive coatings like kaolin.