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.
Frequently Asked Questions
What installation dimensions do I need for an underground operating rod?
Provide the valve depth, ground-level operating location and available access space. Ask for the gearbox and rod arrangement drawing so the operating point and installation clearance can be checked.
Which offset configuration will the underground valve use?
The page describes double-offset and triple-offset alternatives. State the required valve configuration and service conditions and request confirmation of the selected structure; do not assume both descriptions refer to the same assembly.
What should I confirm for a damp underground installation?
Describe the external exposure, expected water ingress and access conditions. Request confirmation of the gearbox, external protection and maintenance arrangement for the selected valve rather than treating an underground product name as a protection rating.