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該閥組與(yu)(yu)1151（3351）系列電容(rong)差(cha)壓(ya)(ya)變(bian)送(song)器配(pei)套安裝，用(yong)于從(cong)引壓(ya)(ya)點(dian)將(jiang)信號(hao)引入1151系列差(cha)壓(ya)(ya)變(bian)送(song)器正、負測量室(shi)，使(shi)引壓(ya)(ya)點(dian)與(yu)(yu)測量室(shi)接(jie)通或(huo)斷開。通過(guo)法蘭與(yu)(yu)變(bian)送(song)器直接(jie)連(lian)接(jie)。