spider single check valve 十字单向阀
Single check valve bailers 止逆阀式
single ball check valve 单球单向阀
single pilot check valve 单先导单向阀
Single disc swing check valve 单瓣旋启式止回阀
single disc lift check valve 单瓣升降式止回阀
single e check valve 单止回阀
single check valve
单止回阀
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The ALC? is an in-line, spring assisted, single guided "wafer" check valve designed to prevent "water hammer" and "reverse" flow.
同轴、管内螺纹弹簧单导对夹式止回阀，专门用于防止水击作用和倒流现象。
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