The installation of the ventilation butterfly valve is very important, because the quality of the installation is directly related to the future use of the machine, so we must be careful when installing the ventilation butterfly valve, and pay attention to related issues! Below is the editor of Haotian and take everyone to discuss it!

　　Ventilation butterfly valve structure is designed and manufactured by a new type of structure welded between a centerline disc plate and a short structure steel plate. It is compact in structure, light in weight, easy to install, small in flow resistance, large in circulation, avoiding the influence of high temperature expansion, and easy to operate. There are no connecting rods, bolts, etc. in the ventilating butterfly valve, which ensures reliable operation and long service life. Ventilation butterfly valve is a kind of non-closed butterfly valve, which is widely used in the production process of building materials, metallurgy, mining, electric power and other production processes on pipelines with a medium temperature of ≤300℃ and a nominal pressure of 0.1Mpa to communicate, open and close or adjust the amount of medium.

　　Ventilation butterfly valves should generally be installed horizontally in pipelines, and are used in dusty cold or hot air gas pipelines for ventilation and environmental protection projects in chemical, building materials, power stations, glass and other industries, as a pipeline control device for regulating flow or cutting off the gas medium.

　　 The three-way control valve can replace two two-way control valves that are used at the same time. The three-way control valve can be divided according to the mode of action; positive action: electric closed type (the valve position moves downward when the electric signal increases), "Type B" reaction: electric open type (the valve position moves upward when the electric signal increases ), "Type K". The three-way control valve has compact structure, light weight, sensitive action and accurate flow characteristics. It can directly receive control signals (4-20mA DC 0-10mA DC or 1-5V DC) input from the regulating instrument and single-phase power supply to control the operation. , To realize the automatic adjustment and control of the fluid medium of the process pipeline, which is widely used to accurately control the process parameters of gas, liquid, steam and other media such as pressure, flow, temperature, liquid level and other parameters to maintain the given value.