Several Knowledge Needed to Know in Using Eccentric Hemispherical Valve
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1、 The valve and hemisphere are made of bimetal, and different alloys are surfacing welded on the sphere and valve seat. In order to meet the needs of various occasions, special treatment shall be carried out for the eccentric hemisphere valve, so that the sealing surface can be combined into various types of anti-corrosion, anti-wear, high temperature resistance, etc.
2、 globe valve The purpose of locking, adjusting and closing is achieved through the transmission mechanism. Both the seal ring and the ball are metal ring with hard surface contact seal. When the valve with double eccentric structure is opened, the ball is hidden in the valve chamber, with large flow load surface, and the valve is not washed and has no flow resistance; When closing, the spherical surface of the valve core is gradually along the valve seat, with the shear function, which can effectively remove the scale obstacles and achieve reliable sealing. It is particularly effective for the transportation of media that are easy to scale.
3、 The valve seat and ball are provided with a compensation amount. When the valve seat is worn, it can still be reliably sealed and its service life can be extended by turning a little when it is closed.
4. Ball valve The sealing property is maintained well, and the transmission of harmful gas can reach zero leakage.
