PQ side mounted two way sealed eccentric hemisphere valve

PQ side mounted bi-directional eccentric hemisphere valve is developed on the basis of absorbing and digesting the pair clip type large flow through valve (maxiflu stell ventile) produced by canal company of Germany. Its structure adopts the eccentric clamping principle to achieve the purpose of locking, adjusting and closing through the transmission mechanism. The sealing pair is a metal face ring with hard face contact seal, and the valve core of the double eccentric structure is located in the hidden position when it is opened In the ball chamber, the flow section is large, and the valve is not scoured. When the valve is closed, the valve core is not scoured. When the valve is opened, the spherical surface of the valve core asymptotically moves along the valve seat, which effectively removes the scaling obstacles and realizes reliable sealing. The first feature is that it is particularly effective for the mixed flow transportation of two-phase mixed flow easy to scale solid precipitation; the second feature is that the hemisphere of the valve is made of bimetallic, the base metal is overlaid with different alloys, the valve seat is also overlaid with corresponding surfacing, and the sealing surface is assembled with various types of anti-corrosion, wear-resistant, high-strength, etc., to meet the needs of different occasions; The third feature is tight sealing, conveying harmful gas can reach zero leakage; the fourth feature is that the valve core of the sealing pair has compensation, when the valve seat is worn (the hardness of the valve seat is lower than that of the valve core), when it is closed, it can still be reliably sealed and the service life is extended. In addition, the valve seat can still be used after adjusting or replacing by screwing off the compression nut, which avoids the defect that the sealing of many existing valves is invalid and the whole valve is scrapped. Therefore, the selection of different alloy (or combination ball) bimetallic sealing pairs can be used in different industrial fields, such as wear resistance, corrosion resistance, high temperature resistance and strict sealing.