Exhaust vents with prevention against unwanted airflows against the intended airflow direction WS
WS are used as low- and medium-pressure ventilation systems terminals as exhaust vent with return air flow shut-off. Special duct-mounted WS-K variant allows the use in rectangular ventilation ductworks run. Movable shut-off leafs are being opened under the influence of pressure increase in a ventilation system.
WS is equipped with movable leafs, made of aluminum, preventing against return airflows in a ventilation system. The frame of a wall-mounted version WS or the body of a duct-mounted version WS-K are made of galvanized steel. RAL caating and stai n less steel execution is possible on request.