If the temperature indicated by the temperature pointer is less than or equal to 150 ℃, tetrafluoro sealing material is required. If the temperature indicated by the temperature pointer is higher than 150 ℃, hard sealing material is required. The pressure pointer corresponds to the material of the main body of the pneumatic butterfly valve. If the pressure value is smaller than 16 kg, the main body of the valve needs to be made of cast iron, and the temperature in the north is lower, Cast iron or cast steel valves need to be considered, but the cast iron material is relatively fragile. If the local temperature is very low, the valve surface is easy to crack. When the external pressure exceeds 16 kg, cast steel valves need to be considered. When purchasing valves, consumers need to comprehensively consider the above factors and select valves of corresponding materials to avoid accidents during the use of valves.

The electric on-off butterfly valve supplied by the company is so popular that it is very suitable for on-off control or regulation of two position switch. Behind its high sales volume, it naturally has outstanding advantages and has become the first choice of consumers. I will talk to you in detail.