H42J衬胶止回阀江苏尼必可流体衬胶止回阀概述：止回阀是一种依靠介质本身的流动而自动启闭阀瓣用来阻止介质逆向流动的自动阀门。好施的衬里止回阀基本类型有四种：H41型法兰连接直通升降式止回阀和H42型升降立式止回阀、H44立式止回阀、H76旋启式止回阀。衬胶止回阀设计规范遵循GB/T12235，GB/T12236，API6D标准衬胶止回阀主要零部件材料表：序号零件名称灰铸铁铸钢不锈耐酸铸钢超低碳不锈耐酸铸钢ZCPRPLRL1阀体/阀盖HT250WCBCF8CF8MCF3CF3M2阀瓣/阀杆351Cr131Cr18Ni91Cr18Ni12Mo2Ti00Cr18Ni1000Cr17Ni14Mo23衬里/阀座PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO4紧固螺栓WCB1Cr17Ni21Cr18Ni9Ti5螺母PTFE(F4)CF8CF8衬胶止回阀主要外形和连接尺寸：公称通经LDD1D2fbZ-φdDD1D2fbZ-φdDN(mm)NPS(inch)PN1.0MPaPN1.6MPa151/21309565452144-φ1413095652144-φ14203/415010575552164-φ14150105752164-φ1425116011585652164-φ14160115852164-φ14325/4180135100782184-φ181801351002184-φ18403/2200145110853184-φ182001451103184-φ185022301601251003204-φ182301601253204-φ18655/22901801451203204-φ182901801453204-φ188033101951601353224-φ183101951603224-φ1810043502151801553228-φ183502151803248-φ1812554002452101853248-φ184002452103268-φ1815064802802402103248-φ234802802403288-φ232008600335295265326