1. Used for gas pipeline in sulfuric acid industry: inlet and outlet of pre-furnace blower, relay blower, electric defrosting series and connecting valve, inlet and outlet of S02 main blower, converter adjustment, preheater inlet and outlet, etc., and use of cut-off gas volume.

2. It is used in sulfur burning, conversion and dry suction section of sulfur acid making system. It is a valve for sulfur acid making device, which is considered by the majority of users as a butterfly valve with good sealing performance, light operation, secondary corrosion, high temperature resistance, convenient operation, flexibility and safe and reliable use

, has been widely used.

3. It is also widely used as regulating and intercepting devices in the pipeline of SO2, steam, air, gas, ammonia, CO2 gas, oil, water, salt water, alkali liquid, sea water, nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid and other media in the chemical industry, petrochemical, smelting, medicine, food and other industries.