Fume discharge and fire fighting damper series——

    Fume discharge and fire fighting damper is fixed in pipeline of fume discharge system generally. It is closed normally, when fire, the smoke detector will send out fire alarm signal, the control center will send this signal to electric-magnet on damper through DC24V to open the damper quickly. Or open the damper by man hands quickly to discharge fume, when the temperature inside the pipe is up to 280 ℃ will close automatically, or replace it by man hands.

Air current regulating damper series——

The FT series air current regulating damper is widely used in air-conditioning system of industry, mining and civil building to control the air current exactly. It is one of the key equipment to control ventilation mode under all kinds of working conditions. Its main features are nimble revolution, low noise small leakage (the leakage of closed type is < 0.5%), wide working temperature band, reliable structure convenience and safety.

The above dampers have many characteristics such as fine material, excellent technology, stable and reliable control articles. The damper housing is made of 2 mm galvanized sheets after cold-rolled and is protection-welded by carbon dioxide gas or made of ordinary Q235 plate after welding. The blades are corrugated shape punched by 1 mm galvanized sheets. The square shaft  is welded at the joint between two blades, or after cold punched of 2 mm G235 steel plate, punch a hole to insert the square shaft or weld a round shaft.

The movement has two kinds, opposite or parallel.

The driving type has three kinds, manual, electric and automatic.

The actuators are famous brands in the world ones. For example, HONEWELL of USA, SIMENS of German, BELIMO of Switzerland and HENGTAI of Hebei Province.

We suggest that square-round type damper should be used in round pipeline. The square-round type damper is one that added two round transmission flanges on the square damper foundation.