这个控制阀是一个堰式隔膜阀，在流体系统中形成一个堵塞点，需要经常进行维护。
This control valve is a weir diaphragm valve and has created a clogging congestion point in the flow system that requires constant maintenance.
本发明提供一套自力式机械装置、自动调节活动堰板、反冲阻流器、提拉阀。
This invention provides a set of self-powered mechanical device, an auto-regulating movable weir-plate, a back-flushing buffer and lift-pull valve.
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