SISTAG Absperrtechnik is the first choice when it comes to regulating, diverting, blocking or collecting liquid or gas fluid: in the industry, for water and waste water, in the chemical process and the environment technology when long term quality is important and tailor made solutions are required. As a manufacturer with countless years of experience, SISTAG offers its customers the ideal synthesis of cutting edge technology, durability and economic efficiency: Flow control technology that broadens one’s mind.  

The name and label entails responsibility. SISTAG and WEY® are inseparably connected. This is because WEY® is SISTAG’s trademark, and all products which bear the name WEY® are exclusively manufactured by SISTAG, with the utmost care and precision for the longest durability.