HC42X、HC42T、HC42H型PN10~PN25消声止回阀适用于给、排水、消防、暖通系统，可安装于水泵出口处，以防止介质倒流及水锤对泵的损坏。
【产品特点】
HC42X、HC42T、HC42H型PN10~PN25消声止回阀内部流道采用流线型设计，压力损失极小，阀瓣启闭行程很短，停泵时可快速关闭，防止巨大的水锤声，形成静音效果。
Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.
【主要零部件材料】
零件名称 | 材料 |
阀体 | 铸铁、球墨铸铁、碳钢 |
导流体 | 铸铁、球墨铸铁、碳钢 |
阀座 | 青铜、铬不锈钢 |
阀瓣 | 青铜、铬不锈钢 |
轴 | 青铜、铬不锈钢 |
弹簧 | 不锈钢 |
【主要外形和连接尺寸】
型号 | 公称通径 | D1 | D2 | D3 | N-ΦD | L | ||||
1.0MPa | 1.6MPa | 1.0MPa | 1.6MPa | 1.0MPa | 1.6MPa | 1.0MPa | 1.6MPa | |||
H42H | DN300 | 370 | 400 | 410 | 460 | 12-13 | 12-28 | 181 | ||
H42H | DN350 | 429 | 460 | 470 | 520 | 16-23 | 16-28 | 184 | ||
H42H | DN400 | 480 | 515 | 525 | 580 | 16-28 | 16-31 | 191 | ||
H42H | DN450 | 530 | 565 | 585 | 640 | 20-28 | 20-31 | 203 | ||
H42H | DN500 | 582 | 620 | 650 | 715 | 20-28 | 20-34 | 219 | ||
H42H | DN600 | 682 | 725 | 770 | 810 | 840 | 20-31 | 20-37 | 222 | |
H42H | DN700 | 794 | 840 | 840 | 895 | 910 | 24-31 | 24-37 | 280 | |
H42H | DN800 | 901 | 950 | 950 | 1015 | 1025 | 24-34 | 24-40 | 356 | |
H42H | DN900 | 1001 | 1050 | 1050 | 1125 | 1125 | 28-40 | 28-40 | 368 | |
H42H | DN1000 | 1112 | 1160 | 1170 | 1230 | 1255 | 28-43 | 28-43 | 432 | |
H42H | DN1200 | - | 1380 | 1390 | 1455 | 1485 | 32-49 | 32-49 | 524 | |
These devices are suitable for accurately controlling media such as gases, liquids, steam, etc., and maintaining process parameters such as pressure, flow rate, temperature, and liquid level at given values. Especially suitable for work environments where the allowable pressure difference is small and the allowable leakage is also small, and the pressure difference is not significant.
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