NAF.

Founded in Stockholm in 1899, NAF began manufacturing valves for the pulp and paper industry in 1904. Throughout its history, the brand has continued constant development in close cooperation with the industry, maintaining an ongoing reputation as a market pioneer. 

NAF has a global reputation for reliable, high-availability rotary valves, including capping valve designs specifically for filling batch digesters with wood chips and utilizing two actuators for opening and closing. 

NAF was acquired by Flowserve Corporation in 2002.