H71H不锈钢对夹升降式止回阀? ?? ◆?对夹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 | H71W-16P | 1.6 | 2.4 | 1.76 | ≤200 | 水、蒸体、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 | 4.0 | 6.0 | 4.4 | ≤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 | H71W-25H、RH71W-40H | 2Cr13 | 1Cr13 | 1Cr18 Ni9Ti | H71W-16P、RH71W-25P | ZG1Cr18 Ni9Ti | 1Cr18 Ni9Ti | 1Cr18 Ni9Ti | ? | ? ◆??对夹式止回阀规格尺寸表:? ? 公称通径DN(mm) | L | D | 1.6 | 2.5 | 4.0 | 15 | 25 | 48 | 48 | 48 | 20 | 31.5 | 58 | 58 | 58 | 25 | 35.5 | 68 | 68 | 68 | 32 | 40 | 80 | 80 | 80 | 40 | 45 | 90 | 90 | 90 | 50 | 56 | 105 | 105 | 105 | 65 | 63 | 125 | 125 | 125 | 80 | 71 | 140 | 140 | 140 | 100 | 80 | 160 | 165 | 165 | 125 | 110 | 190 | 195 | 195 | 150 | 125 | 215 | 225 | 225 | 200 | 160 | 270 | 285 | 290 | 250 | 200 | 330 | 340 | 350 | 300 | 250 | 385 | 400 | 415 | ? | |