SISTAG Absperrtechnik is a Swiss company offering quality, experience and innovative knowledge to its clients all over the world. In 1964 SISTAG became an owner of the WEY patent for knife gate valves.

AFT has been representing SISTAG in Poland since 1999 offering mainly knife gate valves, sluice valves and non-return flap valves.

WEY knife gate valves are used to cut-off or regulate the flow of sediments, sludge, granulate, loose and abrasive materials or other media of high consistency.

WEY sluice valves are made for open and close channels. They can be leak proof in three or four directions. The standard materials used are light but solid. They can also be delivered as overflow weir valves, with a bottom regulating plate. SISTAG’s production program also contains hand stop valves, hydrostatic valves, radial weir gates and stop log valves.

Depending on the needs we offer different material options with a wide range of cutting-off and regulating actuators.

Considering uncompromising quality and almost maintenance free long-term exploitation, SISTAG knife gate valves in their characteristic red color as well as channel valves are widely used in the entire country of Poland.

www.sistag.ch