箭形止回阀技术参数SpecificationofTypeArrowBackPressureValve型号Type外径O.D(mm)内径I.D(mm)连接螺纹Connection***大密封压力Max.SealPressure(Mpa)FJ898933NC263570FJ10510544NC313570FJ12112156NC383570FJ15915970N***63570FJ16516582NC503570FJ16816882NC503570FJ178178825-1/2FH3570FJ203203826-5/8REG3570FJ229229827-5/8REG3570)