对夹升降式止回阀 | ◆ 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 | | SH71W-16T | 1.6 | 2.4 | 1.76 | ≤200 | 水、蒸体、油品等 | | SH71H-25Q | 2.5 | 3.75 | 2.75 | ≤235 | | SH71W-25H | ≤300 | | SH71W-25P | ≤200 | 硝酸等腐蚀性介质 | | SH71W-40H | 4.0 | 6.0 | 4.4 | ≤300 | 水、蒸体、油品等 | | SH71W-40P | ≤200 | 硝酸等腐蚀性介质 | |
| 规格型号 | 阀体 | 阀瓣 | 弹簧 | | SH71H-16Q、H71H-25Q | QT400-15 | 25 | 50CrCA | | SH71W-25H、H71W-40H | 2Cr13 | 1Cr13 | 1Cr18Ni9Ti | | SH71W-16P、H71W-25P | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti | |
| 公称压力
MPa | 公称通径
DN | 尺寸（mm） | | L | D1 | D2 | D3 | D4 | D5 | PN1.0MPa
PN1.6MPa | 15 | 16 | 52 | 15 | 24 | 31 | 40 | | 20 | 19 | 62 | 19 | 30 | 40 | 50 | | 25 | 22 | 72 | 24 | 35 | 47 | 58 | | 32 | 28 | 83 | 31 | 46 | 56 | 68 | | 40 | 31.5 | 93 | 39 | 55 | 66 | 78 | | 50 | 40 | 108 | 48 | 65 | 78 | 90 | | 65 | 46 | 128 | 62 | 80 | 95 | 110 | | 80 | 50 | 142 | 76 | 96 | 110 | 128 | | 100 | 60 | 162 | 95 | 115 | 132 | 150 | | 125 | 90 | 192 | 110 | 125 | 135 | - | | |
