The valve is a control component in a piping fluid delivery system and is a control component used to change the direction of the passage and the flow direction of the medium. Thus, its sealing is very important.
Valve sealing performance refers to the sealing parts of the valve to prevent media leakage ability, it is used to measure the technical performance of the valve the most important indicators. The sealing parts of the valve are mainly distributed in the contact between the opening and closing parts and the sealing surface of the valve seat, the filling parts of the packing and the stem and the stuffing box, and the connection between the valve body and the valve cover. Although they are all important parts of the seal, but each time the sealing are different.