VAN BƯỚM DK VALVE Triple offset butterfly valve

Triple offset butterfly valve

Triple Offset Geometry

▪ 1st offset :

The valve stem is offset behind the seat axis to allow complete sealing contact around the entire seat.

▪ 2nd offset :

The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve.

▪ 3rd offset :

The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.
With this geometry, seat seal interference is completely eliminated ensuring long sealing life. The result is torque seating, process pressure aided frictionless seal.
The geometry allows the body seat to be used as the closed limit stop, aiding operator adjustment. The triple offset design is ideally suited to metal seated valves providing
bubble-tight performance on high temperature, high pressure and fire safe application.