The valve stem axis simultaneously deviates from the disc center and the body center, and the valve seat turns the axis and the valve body channel axis has certain Angle, is called the Triple offset butterfly valve
The axial center of the valve stem is simultaneously deviated from the center of the disc and the center of the body, and the rotation axis of the valve seat has a certain angle with the axis of the valve body passage, which is called triple offset butterfly valve.
The double offset butterfly valve is characterized in that the shaft center of the valve stem is offset from both the center of the disc and the center of the body. The double offset effect allows the disc to be quickly disengaged from the valve seat after the valve is opened, which greatly eliminates unnecessary over-squeezing and scraping of the disc and the valve seat, reduces the opening resistance, reduces wear and improves the seat life.
The offset butterfly valve is divided into single offset butterfly valve, double offset butterfly valve, and triple offset butterfly valve. A butterfly valve whose valve stem axis is at the same time deviated from the center of the disc and the center of the body, and whose sealing pair is a slanting vertebra is called an offset butterfly valve.
The comprehensive feature of the plug valve is that it has a long service life and high reliability. It is a good choice for many corrosive, abrasive, highly toxic, continuous operation media and devices, and has application advantages and extensive applications in the chemical industry.