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JD745X多功(gong)能(neng)水(shui)泵控(kong)(kong)制(zhi)閥采用(yong)直流式閥體,主閥控(kong)(kong)制(zhi)室為膜片式或(huo)活塞式的(de)雙控(kong)(kong)制(zhi)室結構,控(kong)(kong)制(zhi)室比一(yi)般(ban)水(shui)力(li)控(kong)(kong)制(zhi)閥增加了一(yi)個,增加了對主閥的(de)控(kong)(kong)制(zhi)功(gong)能(neng),實(shi)現(xian)了對水(shui)泵出口的(de)緩 慢開啟、全開、緩閉(bi)、截止(zhi)等多功(gong)能(neng)控(kong)(kong)制(zhi),實(shi)現(xian)了一(yi)個閥門、一(yi)次調節對水(shui)泵出口的(de)多功(gong)能(neng)控(kong)(kong)制(zhi)。