对夹式止回阀 H 71 基本信息栏 品名 型号 规格 压力 材质 对夹式止回阀 H71H DN50-600mm PN1.6-6.4mpa 碳钢；不锈钢 H71H 型升降对夹式止回阀由阀体、阀瓣、弹簧等组成，水平或垂直安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好。 H 71对夹止回阀结构图 技术参数 型公称壳体 密封 工作温度 适用温度 号 通径 H71H-16Q 1.6 2.4 1.76 ≤235℃ 水、蒸气、油品等 H71H-25Q 2.5 3.75 2.75 ≤235℃ H71W -25H ≤300℃ H71W -25P ≤200℃ 硝酸等腐蚀性介质 H71W -40H 4 6 4.4 ≤300℃ H71W -40P ≤200℃ 水、蒸气 H 71系列对夹升降式止回阀的型号、材料及主要参数 配管法兰 公称压力 常规产品型号 JB/T 74 ~ 90、 GB/T 9112 ~9124、 HG 20592 ~ 20614 PN1.0MPa H71H-10C H71W-10P H71W-10P8 H71W-10P3 H71W-10R H71W-10R8 H71W-10R3 PN1.6MPa H71W-16C H71W-16P H71W-16P8 H71W-16P3 H71W-16R H71W-16R8 H71W-16R3 PN2.5MPa H71W-25 H71W-25P H71W-25P8 H71W-25P3 H71W-25R H71W-25R8 H71W-25R3 PN4.0MPa H71W-40 H71W-40P H71W-40P8 H71W-40P3 H71W-40R H71W-40R8 H71W-40R3 PN6.3MPa H71W-63 H71W-63P H71W-63P8 H71W-63P3 H71W-63R H71W-63R8 H71W-63R3 PN10.0MPa H71W-100 H71W-100P H71W-100P8 H71W-100P3 H71W-100R H71W-100R8 H71W-100R3 PN16.0MPa H71W-160 H71W-160P H71W-160P8 H71W-160P3 H71W-160R H71W-160R8 H71W-160R3 GB/T 9112 ~9124、 HG 20615 ~ 20635、 SH 3406 PN2.0MPa H71H-20C — H71W-20P8 H71W-20P3 — H71W-20R8 H71W-20R3 PN5.0MPa H71H-50 — H71W-50P8 H71W-50P3 — H71W-50R8 H71W-50R3 PN11.0MPa H71H-110 — H71W-110P8 H71W-110P3 — H71W-110R8 H71W-110R3 PN15.0MPa H71H-150 — H71W-150P8 H71W-150P3 — H71W-150R8 H71W-150R3 ANSI B 16.5 Class150 H71H-A1C — H71W-A1P8 H71W-A1P3 — H71W-A1R8 H71W-A1R3 Class300 H71H-A3 — H71W-A3P8 H71W-A3P3 — H71W-A3R8 H71W-A3R3 Class600 H71H-A6 — H71W-A6P8 H71W-A6P3 — H71W-A6R8 H71W-A6R3 Class900 H71H-A9 — H71W-A9P8 H71W-A9P3 — H71W-A9R8 H71W-A9R...
