Underground butterfly valve means that the transmission rod of the switch valve is located directly above the worm gear box. The butterfly valve does not need to be installed sideways, and the valve can be opened and closed by manpower on the ground above with a special operating rod.
Underground Triple Offset butterfly valve
The main material is stainless steel or carbon steel, and the valve core structure can adopt double eccentric or triple eccentric structure. It is mainly used in the water supply pipeline of underground pipe network, which can resist moisture and corrosion.