Yongjia County electric flange hard seal butterfly valve electric two-way valve butterfly valve that expensive? 1. Material inspection No matter what kind of device it is, if there is a problem with the manufacturing material, it may fail in the process of use, and it needs to be checked with the help of the fluid in the pneumatic switch ball valve. For example, carbides will be converted into graphite, iron oxide, etc. at low temperature, and plastic reduction and other changes will occur. Therefore, the purchaser needs to find the valve material that meets the requirements when selecting.
、 Surrounding environment: the temperature is - 20 ℃~+70 ℃, and the ambient humidity is below 90% RH. Before installation, check whether the valve conforms to the load application regulations according to the factory nameplate on the valve.
