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CN108431470A 用于研磨介质的减震耐磨球阀座 无效 - 撤回

用于研磨介质的减震耐磨球阀座
摘要：
止回阀包括球和座。座包括主体和延伸穿过该主体的孔。孔的直径小于球的直径。座的主体由超高分子量聚乙烯形成。座的超高分子量聚乙烯在1.8MPa下具有46.7℃的ASTM D648热挠曲温度。
摘要（英）：

A check valve includes a ball and a seat. The seat includes a body and a hole extending through the body. The hole is smaller in diameter than the ball. The body of the seat is formed from ultra-high-molecular-weight polyethylene. The ultra-high-molecular-weight polyethylene of the seat has an ASTM D648 heat deflection temperature of 46.7° C. at 1.8 MPa.

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