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结构及用途 Structure and purpose
该阀用于生活供水和消防供水并联供水系统中，正常情况供生活用水，当火灾发生时消防用水时，阀门自动关闭生活用水，确保足够的消防用水。当消防停止用水时压力减少，阀门自动恢复生活用水，该阀使系统无须另设专门的消防单独供水管网，大大地节省了工程建设成本和日常的用水量。该阀控制灵敏、安全可靠、调试简单、使用寿命长。
Used in the living and fire-fighting merged water supply
system It supplies living water at normal condition and．in
case of a fire，automatically close the living water and open
the fire-fighting one to make it surely enough，and then when
fire-fighting water stops and the pressure is reduced，resets
the living wa-ter automatically．Thus making the system no
need to set an individual fire-fighting water supply pipe
network and both engineering construction cost and daily
water used quantity greatly saved.It features sensitive
control,safety,reliability,simple debugging and long
duration |
