不鏽鋼水流開關,小流量啟動,大流量通過,各種口徑可選:FS-DN10S, FS-DN15S ,FS-DN20S ,FS-DN25S ,FS-DN32S ,FS-DN40S , FS-DN50S ,FS-DN65S ,FS-DN80S , FS-DN100S.
