Extended stem butterfly valve flange extended stem specification Extended stem butterfly valve refers to the extended part of the operating stem that connects the valve operating platform and the valve body. Mainly used in underground work environments such as mines and underground mines. After the valve stem is lengthened, people can remotely operate the valve switch on the ground. We can produce valve stems according to customer specified lengths: 1 meter, 2 meters, 10 meters, or even 100 meters.
