duplex check valve

例句：

1. 1.The duplex check valve is used to prevent backflow in pipeline systems.
   双腔止回阀用于防止管道系统中的逆流。
2. 2.In this case, the duplex check valve is designed to maintain a constant pressure difference across the pipe.
   在这种情况下，双腔止回阀被设计成保持管道两端的压力差恒定。
3. 3. The duplex check valve is essential for maintaining the integrity of the pipeline system and preventing potential leaks or malfunctions.
   双腔止回阀对于维护管道系统的整体性和防止潜在的泄漏或故障至关重要。