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The sealing surface of the stainless steel gate valve can be sealed only by the medium pressure, that is, the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface. Most gate valves are forcedly sealed, that is, when the valve is closed, the gate is forced to be pressed against the valve seat by external force to ensure the tightness of the sealing surface.
Stainless steel gate valve is made of stainless steel sheet and graphite sheet. This structure can effectively avoid the influence of small solids in the medium and the sealing surface can be caused by thermal expansion. Even if it shows small damage, it will not leak.