The air volume control valve of the fire fan is suitable for the ventilation and air conditioning of industrial buildings and residential buildings.The air volume adjustment valve has good gas density, low noise, reliable structure, and good adjustment performance.According to the type, the air volume regulating valve of the fire fan can be divided into a opposite multi -blade regulating valve. The butterfly valve (single blade regulating valve) and the clockwise open the regulating valve.According to the control method of the air volume control valve, the air volume control valve can be divided into manual and electric.The materials of the air volume regulating valve generally include iron plates, galvanized plates, aluminum alloy plates and stainless steel plates.The overall air volume regulating valve is made of galvanized steel frame.Cold rolling galvanized steel plates suppressed and welded with carbon dioxide.The middle part of the frame is a single stamping square shaft or a welding round shaft.The blade air flow control valve is the key to traffic control.There are four specifications for the width of the blades, and all specifications are designed with diamond -shaped two -blade.The blade is connected by a soft connection connector to ensure that it is good at work.Features of the air volume regulating valve 1. The nozzle size of the air volume regulating valve is the same as the rectangle size specified by the channel standardization.2. The blades of the air volume regulating valve can be used as a regulatory valve for ventilation, air conditioning and air purification system.3. After testing, the air volume regulating valve has good gas tightness, which is about 5 % relative to the air leakage, and the adjustment performance is good.When the positive pressure of the system restores ventilation of the gas pipe and exhaust pipe and supply air, the stop valve is opened.When the gas supply pipe and exhaust pipe stop the gas supply, the equipment can turn the valve under the gravity of the leaves and the hammer to prevent the gas from flowing.The specific installation of the air volume adjustment valve can be selected and installed according to the design of the air volume regulating valve according to the building standard.The central fresh air system and exhaust system can effectively ensure the constant fresh air gas supply and exhaust volume, control the air volume, reduce noise, reduce leakage, and perform extensive temperature control, safety, and easy operation in the working environment.It is suitable for central fresh air systems and exhaust systems in large -scale places such as hotels, hospitals, office buildings, shopping malls, and basement.