介绍了大口径止回阀阀体密封面的加工方法，分析了刀具几何参数的选择与确定。
This paper introduces the manufacture of sealing surface (valve body) about great size check valve and analyzes the choices and the decisions about geometrical parameters of tools.
阀瓣与阀体密封面经过精密研磨，组装完毕经过100%试压，全部达到零泄漏。
Valve with the valve sealing surface through precision grinding, assembly, after 100% completion of pressure test, all to achieve zero leakage.
汇总了塑料阀门产品要求的阀座密封试验、阀体密封试验、阀体强度试验、阀门长期试验、疲劳强度试验和操作扭矩的规定和方法。
The regulations and methods for valve base seal test, valve seal test, valve strength test, long term valve test, fatigue test and operating torque test were summed up in this article.
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