Extension Stem butterfly vlave refers to the extension of the operating rod connected with the valve operating platform and the valve body. It is mainly used in underground working conditions such as underground mines and mines. After the valve stem is lengthened, people can remotely operate the valve switch on the ground. We can produce the valve stem according to the length specified by the customer: 1 meter, 2 meters, 10 meters or even 100 meters, etc.
