止(zhi)回(hui)閥安裝于(yu)風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)中，當通風(feng)(feng)(feng)(feng)(feng)時，由于(yu)風(feng)(feng)(feng)(feng)(feng)壓而使其開啟，當停(ting)止(zhi)送(song)風(feng)(feng)(feng)(feng)(feng)時，由于(yu)葉片或重錘的重力，使閥門自(zi)動關閉。T303- B用(yong)于(yu)水平風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)上：T303- Z用(yong)于(yu)垂直風(feng)(feng)(feng)(feng)(feng)管(guan)(guan)上。
了解詳(xiang)細參數請聯(lian)系我們
