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回答：  浏览：7375  提问时间：2010/1/19 8:21:09

28pc golbe valve size 2" 150# rf single port , up flow direction , equal% port , shutoff class IV , Cv 43.7 , size 46mm, body and inners mtl ss 316L , unbalanced , plain bonnet , w spring/diaphfragm actuator ,With Fisher DCV2000 posiyioner, travel 20mm , pushdown to close , no handweel , supply air 4 bar.