Triple Eccentric Butterfly Valve is the third eccentric treatment for the butterfly valve to overcome the problem of high temperature resistance and zero leakage of double-eccentric butterfly valve, so it is called Triple Eccentric Butterfly Valve. Triple Eccentric Butterfly Valve are widely used in metallurgy, power, petrochemical and other fields because of their high temperature resistance up to 425 C.

The structural characteristics of Triple Eccentric Butterfly Valve  are that the conical axis of the sealing surface of the butterfly plate deflects to the cylinder axis of the body while the axis of the double-eccentric stem is eccentric, that is to say, after the third eccentric, the sealing section of the butterfly plate is no longer a true circle, but an ellipse, and the shape of the sealing surface is asymmetric, one side inclines to the body center line, the other side is parallel to the body. Centerline. The greatest feature of this third eccentricity is that it fundamentally changes the sealing structure, no longer the position seal, but the torsional seal, that is, it does not rely on the elastic deformation of the seat, but completely relies on the contact surface pressure of the seat to achieve the sealing effect. Therefore, the problem of zero leakage of the metal seat is solved at one stroke, and because the contact surface pressure is proportional to the medium pressure, it can withstand high pressure and high temperature. Readily solved.

Triple Eccentric Butterfly Valve  seat installation structure has two kinds, most of which are installed on the butterfly plate for the convenience of drawing, but Tritec uses the body seat structure to install the seat on the body. Compared with butterfly plate seat, it greatly reduces the chance of direct contact with medium, reduces the degree of erosion of the seat, and prolongs the service life of the seat. Lamellar Seat Structure
The valve seat is made of stainless steel sheet and graphite sheet. This structure can effectively prevent the influence of small solids in the medium and the occlusion of sealing surface caused by thermal expansion. Even if there is minor damage, it will not produce leakage, which is inconceivable for double eccentric butterfly valve or other Triple Eccentric Butterfly Valve.
Sealing pair is unique, not only the body seat can be replaced, but also because the butterfly plate sealing surface and butterfly plate are independent, the butterfly plate sealing surface can also be replaced, that is to say, when the butterfly plate sealing surface is damaged, it is not necessary to invigorate the public to transport back to the manufacturer or decompose the valve in a large scale, only to replace the butterfly plate sealing surface, which not only greatly reduces the maintenance cost, but also greatly reduces the cost. Maintenance hours and maintenance strength and difficulty of cast iron welding rod.
The above is about the installation of the seat of the Triple Eccentric Butterfly Valve. Beijing Ruito Jiangnan Automatic Control Equipment Co., Ltd. is a manufacturer of angular stroke control valves. It specializes in producing high temperature butterfly valves, Triple Eccentric Butterfly Valve, metal sealed butterfly valves, pneumatic fork actuators and so on. If you need anything, please call us.