The in-line spring-actuated lift check also is referred to as the "silent check" because the spring closes the valve before gravity and fluid reversal can slam the valve closed.

由于这种止回阀能够在重力和介质倒流撞击启闭件之前关闭阀门，因此这种直通弹簧驱动升降式止回阀也称为“静音”止回阀。

youdao

Chinese BBSes and social networks such as Renren are filled with egao, Internet parodies, that slam Qihoo and Tencent but generally hit Tencent harder. (Check out a few good ones in this ChinaHush post.) The Chinese press has chastised both companies, but, for its part, Qihoo (and 360) may come out of the melee relatively unscathed so long as Tencent continues to overreact.

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