A double offset butterfly valve, known as a high-performance butterfly valve, has an extensive range of applications nowadays. This type is an improved valve based on the features and structure of the single offset butterfly valve.
First Offset – the axle of the shaft is following behind the center of the sealing point of valve disc to the valve seat.
Second Offset – the axle of the shaft is eccentric to the center-line of the valve.

The double offset structure in the stem center deviates from the centers of the disc and valve itself. Upon these features, the disc can leave the seat quickly. Furthermore, reducing unnecessary squeezing and scraping between the two parts. The wearing process then is decreased, and the valve prolongs its operation life.

Moreover, the seat of double offset butterfly valves made from metal yields the declining rate of scraping. Not to mention the ability to withstand working conditions that involve high temperature. This seat feature expands the application range to industries that require high-temperature butterfly valves in their day to day operations.