damper butterfly valve

one way check butterfly damper valve is used for the ventilation duct of flue gas and other gases. Its main function is to prevent the backflow of the medium. The function of the check valve is to allow the medium to flow in only one direction and prevent the flow in the opposite direction. Usually, this valve works automatically. Under the action of fluid pressure flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc act on the valve seat, so as to cut off the flow.

The valve body with lined plate and seat. The High temperature Refractory Lined Damper Valvehas high strength, wear resistance and corrosion resistance. The High temperature Refractory Lined Damper Valve can be designed and manufactured into a round shape according to the needs of users, so as to meet the needs of flue with different cross-section shapes. The flue baffle is equipped with manual actuator (when the diameter is not more than 900mm, it is equipped with hand wheel mechanism), pointer and 0 ~ 90 indicator board to indicate the opening degree of valve plate. The High temperature Refractory Lined Damper Valve can withstand high temperature of 1100 ℃ without jamming and collapse During use, the influence of thermal expansion and cold contraction of the valve will cause the stem and packing to lock, and the valve plate and valve seat to lock. Or too much residual leads to excessive leakage rate of medium. Before processing, Jinbin valve will select the appropriate material according to the temperature, and calculate the expansion amount according to the material and thickness. Under the condition of ensuring low leakage rate, the valve will not be stuck. In the process of use, high temperature through the stem heat conduction to the top of the stem, destroy the actuator circuit or seal ring, resulting in valve necrosis. Jinbin valve will lengthen the stem, increase heat sink, reduce the damage of high temperature to the valve

High Temperature Electric Damper Butterfly Valve is characterized by high temperature resistance, high pressure range and large nominal diameter. The valve body is made of stainless steel, and the sealing ring of valve plate adopts metal ring instead of rubber ring. High Temperature Electric Damper Butterfly Valve is made of steel plate welding, which is mainly used for flue gas duct and gas pipeline with high temperature medium.

High Temperature Hot Air Metallurgy Damper Butterfly Valve has the characteristics of high temperature resistance, high pressure range and large nominal diameter. The valve body is made of stainless steel, and the sealing ring of valve plate adopts metal ring instead of rubber ring. Large high temperature butterfly valve is made of steel plate welding, which is mainly used for flue gas duct and gas pipeline with high temperature medium

The structure of the Ventilation Damper Butterfly Valve is welded by using the center line butterfly disc and short structure steel plate, so there are no connecting rod, bolt and other components in its internal part, so there will be no component problems in the use process, so the failure rate is very low. It's very convenient to use. It is a reliable ventilation butterfly valve device. And because its sealing system is metal sealing, so the service life is longer than elastic seal, and has the characteristics of high temperature resistance. So it is widely used in building materials, electric power, metallurgy and other industries. In the temperature can be higher than 300 degrees in the medium pipeline, can be perfectly connected and closed regulation. Ventilation butterfly valve can also be customized according to the needs of customers.

Large Diameter Big Size DN4600 Damper Butterfly Valve is welded with high-quality wear-resistant materials, with good wear resistance, stable and reliable operation, easy operation, sensitive action, small leakage rate, long service life and convenient installation and maintenance. It is especially suitable for low pressure difference, large diameter and large flow occasions. It is used in combination with various actuators to form different performance valves.

There is no connecting rod, bolt and other components in the part, so there will be no component problems in the process of use, so the failure rate is very low. Because there is a large gap between the butterfly plate and the valve body of the ventilation butterfly valve, there is enough expansion space, so in the process of use, it can effectively prevent the thermal expansion and cold contraction caused by the temperature change, and the butterfly plate will not be stuck

1.Carbon steel, stainless steel and other materials, complete specifications. 2. Non standard size, can be processed according to customer requirements