anti-backflow valve 回流截止阀 ; 排水止回阀
converter backflow check valve 变矩器防倒流单向阀
shuttle valve with backflow 带回流的交换阀
Since then we installed a backflow valve so it was less this time.
自从那时起，我们安装了一个逆流阀，所以这次少了很多。
The system should be flushed before the backflow valve is installed.
在安装回流阀之前系统应该进行冲刷。
Imports, also known as one-way valve or check valve check valve is automatically prevent fluid backflow valve.
进口止回阀又称单向阀或逆止阀，是能自动阻止流体倒流的阀门。
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