This series of butterfly valves features a center vertical plate design. The main valve consists of a body with its internal cavity fully lined with vulcanized rubber and a butterfly plate. It is equipped with a handle or worm gear drive, and the valve is opened or closed by rotating the handle or worm gear 90°. 

Main features: 

•  Short structural length, light weight, quick opening/closing, and small installation space.  

•  The rubber material is resistant to aging and corrosion.  

•  Bidirectional sealing allows operation regardless of water flow direction.  

•  The flow characteristic is nearly linear, providing good regulation performance. 

•  Both the handle and the worm gear drive can be self-locked at any valve opening position, meeting the functional requirement of flow regulation.   

This product is mainly used in construction, food processing, water supply and drainage, etc., serving to shut off or regulate flow in piping systems.