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Constant closing of Taiwan brand check valve
At present, there are two kinds of companies. Before buying, please confirm whether they are normally open or normally closed.
Taiwan Xin Hong reverse valve:
Taiwan JGH check valve:
First, normally closed: there are 4 kinds of interruption: power on time delay, instantaneous interruption of power on, power off delay and instantaneous shutdown.
Besides, it is often open: there are 4 kinds of interruption: power delay and closing, instantaneous closing of power on, interruption of power failure and interruption of power.
Taiwan Xin Hong reverse valve:
Taiwan JGH check valve:
First, normally closed: there are 4 kinds of interruption: power on time delay, instantaneous interruption of power on, power off delay and instantaneous shutdown.
Besides, it is often open: there are 4 kinds of interruption: power delay and closing, instantaneous closing of power on, interruption of power failure and interruption of power.
