Essence: A valve that combines low flow resistance and slow closing check function of butterfly valve. It achieves rapid flow interception and slow closing energy dissipation through butterfly plate rotation opening and closing and hydraulic/mechanical damping regulation, and has energy-saving, anti backflow, and water hammer protection functions.

Core features:

Ultra low flow resistance: butterfly plate thin-walled streamline design, with a flow area of over 90% when fully open, extremely low pressure drop loss, suitable for high flow systems;

Two stage slow closure: When closing, quickly cut off the main water flow first, and then slowly close the remaining opening through hydraulic dampers or spring devices to reduce water hammer impact by more than 80%;

Reliable sealing: The edge of the butterfly plate is covered with rubber or polyurethane, which is flexibly adhered to the valve body, with zero leakage and wear resistance;

Compact and durable: The structure is lightweight, and the valve body is mostly made of ductile iron or stainless steel, which is resistant to high pressure corrosion and has a lifespan of over 10 years.

Typical applications: Water supply and drainage pump stations, industrial circulating water systems, air conditioning pipelines, and other scenarios that require low energy consumption, backflow prevention, and limited space.