Triple Eccentric Butterfly Valve has been greatly improved in its sealing performance after three eccentric design improvements. At present, we say that the Triple Eccentric Butterfly Valve can basically achieve zero leakage. But do you know how Triple Eccentric Butterfly Valve has good sealing? Below Beijing Ruitou to follow you for Triple Eccentric Butterfly Valve sealing structure analysis.

The selection of eccentric parameters and cone top angle of Triple Eccentric Butterfly Valve determines whether the valve interferes in opening, whether the specific pressure of sealing surface is uniform when closing, and the reliability of sealing.

structural analysis
There is no interference during the whole closing process of the Triple Eccentric Butterfly Valve, and the whole sealing surface fits each other at the end of Zui closing, which is similar to the closing characteristics of the globe valve. Therefore, the Triple Eccentric Butterfly Valve is a torque-sealed valve, which breaks through the limitation that the butterfly valve can only be used as a position-sealed valve in the past.
Seven parameters, such as radial eccentricity a, dynamic seal pair thickness b, static seal pair thickness c, elliptical long axis d, axial eccentricity e, eccentricity angle A and cone top angle beta, can determine the sealing pair structure of Triple Eccentric Butterfly Valve. D is determined by the nominal diameter DN of the valve, e is determined by the thickness of the butterfly plate and the diameter of the valve shaft, B and C are determined by the design pressure of the valve, the sealing surface material and the specific pressure of the sealing surface, and the selection of a, A and beta determines whether the interference of theTriple Eccentric Butterfly Valve when closing and whether the specific pressure of the sealing surface after closing is uniform or not, and whether the sealing is reliable.
Do you understand the sealing mechanism of Triple Eccentric Butterfly Valve? If you need to buy Triple Eccentric Butterfly Valve, please call us.