投入式止回阀技术参数SpecificationofDrop－inTypeCheckValve型号Type止动环内径StopRingI.D.(mm)接头Joint止回阀总成CheckValveAssembly工作压力WorkingPressure(Mpa)连接螺纹Connection外径O.D(mm)内径I.D(mm)长度Length(mm)外径O.D(mm)内径I.D(mm)FT893089353353383570NC26FT105331053835036103570NC31FT121501215639554183570NC38FT159541596043558233570NC50FT168641687043568333570NC50FT1786417870515683335705-1/2FHFT2036420370620683335706-5/8REG)