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L鍛鋼(gang)高(gao)壓三(san)通(tong)(tong)流(liu)(liu)道(dao)的三(san)通(tong)(tong)4面(mian)(mian)閥座(zuo)球(qiu)閥,采用2面(mian)(mian)閥座(zuo),受(shou)力平衡,保證(zheng)閉止通(tong)(tong)道(dao)上可(ke)(ke)靠(kao)密封(feng)(feng)。主要(yao)用于流(liu)(liu)路的換向。 T型流(liu)(liu)道(dao)的三(san)通(tong)(tong)4面(mian)(mian)閥座(zuo)球(qiu)閥,采用4面(mian)(mian)閥座(zuo),受(shou)力平衡,保證(zheng)閉止通(tong)(tong)道(dao)上可(ke)(ke)靠(kao)密封(feng)(feng)。主要(yao)用于分流(liu)(liu)、混流(liu)(liu)、換向以(yi)及三(san)通(tong)(tong)道(dao)的*開放。