德通空调通风设备厂

The latest quotation Heze positive pressure air supply vent multi-leaf air supply vent Detong Air Conditioning Equipment Factory Telephone 3 is used in the smoke exhaust system of the corridor of the building or the smoke-proof front room and the windowless room. It is installed on the wall or the ceiling and can be used as an exhaust system. Smoke vents or pressurized air supply vents of smoke control systems. When a fire occurs, the valve is opened through electrical signals or manually to exhaust smoke or supply air to the smoke-proof front room. When the smoke temperature reaches ℃, the valve is closed again to cut off the air flow. ?Performance characteristics. Normally closed, the valve is controlled by the control center power supply to open in case of fire. .Output the start signal, and the interlocking smoke exhaust fan starts. 3. When the flue gas temperature reaches ℃, close the valve again to cut off the air flow. ?Main technical parameters. Air leakage ≤3／. .Control voltage: 3. Action current. .Micro switch contact capacity 3.Resistance coefficient when fully open: