Manual rectangular ventilation valve welding with high quality alloy steel has the advantages of small volume, light weight, wear resistance, long life, small resistance, large flow section and flexible opening and closing. This valve is widely used in metallurgy, building materials, petrochemical, light industry and other industries to open and close the flow rate of gas, semi-fluid, dust gas and other media, automatic adjustment or long-distance control.
- The design is novel, the structure is unique, the weight is light, and the opening and closing are rapid.
- The torque is small, the operation is convenient, and the labor saving is flexible.
- Suitable materials are used to meet medium temperature, high, low medium temperature and corrosive medium.
The manual rectangular ventilation valve is widely used in the ventilation and dust removal system, and the manual rectangular ventilation valve is used as the flow regulation and throttling for the dust-containing gas, the gas pipeline,the ventilation and purification device, the flue gas pipeline and the like,the invention has the advantages of sensitive action, long service life,convenient installation and maintenance, and is especially suitable for occasions with low pressure difference, large diameter and large flow,
The manual rectangular ventilation valve is made of steel plate welding, which has the advantages of short structure size, light weight, convenient installation,small flow resistance, large flux, avoiding the influence of high temperature expansion, easy operation, large expansion gap between the butterfly plate and the valve body, which can effectively prevent the clamping phenomenon caused by thermal expansion and cold shrinkage.