D341X手动法兰式软密封蝶阀序号零件名称灰铸铁铸钢不锈耐酸铸钢ZCPRPLRL1阀体/阀盖HT250WCBCF8CF8MCF3CF3M2蝶板WCBCF8CF8MCF3CF3M3阀杆1Cr132Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti00Cr18Ni10000Cr17Ni14Mo24衬里/阀座PTFE(F4),PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO5紧固销2Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti00Cr18Ni10000Cr17Ni14Mo26填料PTFE(F4)7填料压盖WCBCF8CF8MCF3CF8)