Top mounted two way eccentric ball valve with seal

The assembled two-way sealing eccentric hemisphere valve is a new product successfully developed by absorbing and digesting the advanced technology at home and abroad. It fixes the metal ball crown on the eccentric ball, and realizes the opening and closing of the valve through the 90 degree rotation of the eccentric crankshaft. The metal seat in contact with the sealing surface of the metal ball crown floats in the axial and radial direction, which has compensated the coordination between the ball crown and the valve seat. The valve is used in petroleum and chemical industry In electric power, metallurgy and other industries, the valve structure adopts the eccentric clamping principle, and the valve is tightened, adjusted and closed through the transmission mechanism. The sealing ring and ball crown are metal face ring with hard surface contact seal, and the ductile iron is hidden in the valve cavity when the double eccentric structure valve is opened. The flow section is large, the valve is not scoured and the flow resistance is small. When the valve is closed, the valve core will not be washed. When the valve is closed, the spherical surface of the valve core will gradually move along the valve seat. It has the shear function, which can effectively remove the scaling obstacles and achieve reliable sealing. It is especially effective for the medium transportation which is easy to scale. The valve hemisphere is a metal ball crown fixed on the eccentric ball. Different alloy ball crowns are installed on the ball. The valve seat is also made of corresponding surfacing alloy. After special treatment, the sealing surface is composed of various types of anti-corrosion, wear-resistant, high temperature resistant, etc., which can meet the needs of different occasions. The valve seat and the ball crown are compensated. When the valve seat is worn, it can be reliably sealed and the service life can be prolonged by turning a little when it is closed. The biggest feature of the valve is that after the pressure relief of the device system, the valve can be inspected and maintained online. During the maintenance, it only needs to open the valve cover to lift out the ball crown and support body, instead of unloading the whole valve from the pipeline.