工作介质：水,油，气工作温度：t≤100℃圆柱管螺纹符合ISO228标准黄铜立式升降式止回阀规格尺寸：DNSIZELBH151/2331648203/4412154251482760主要技术参数：型号公称压力PN(MPa)试验压力PS(MPa)工作温度(℃)适用介质壳体密封H71W-16T1.62.41.76≤200水、蒸体、油品等H71H-25Q2.53.752.75≤235H71W-25H≤300H71W-25P≤200硝酸等腐蚀性介质H71W-40H4.06.04.4≤300水、蒸体、油品等H71W-40P≤200硝酸等腐蚀性介质规格型号阀体阀瓣弹簧RH71W-25H、RH71W-40H2Cr131Cr131Cr18Ni9TiRH71W-16P、RH71W-25PZG1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni9Ti规格尺寸表：公称压力MPa公称通径DN尺寸（mm）LD1D2D3D4D5PN1.0MPaPN1.6MPa151652152431402019621930405025227224354758322883314656684031.59339556678504010848657890654612862809511080501427696110128100601629511513215012590192110