HH44XMicro-resistance slow-closing check valveIt consists of valve body, valve cover, valve flap, valve spindle andcontrol valveIt is installed at the outlet of water pump to prevent the medium from backflow and eliminate destructive water hammer, and can effectively reduce the water hammer pressure of the valve closure, which can guarantee the safe operation of the pipeline network. It is characterized by light valve flap, large opening, small fluid resistance, novel design of water hammer elimination mechanism, reliable sealing, long service life, smooth operation, no vibration, no noise and so on.
Product Features
- 微阻缓闭式止回阀具有阀瓣轻、开度大、节电损耗小、流体阻力小、水锤消除机构设计新颖、密封性能稳定可靠、耐磨损、使用寿命长、运行平稳、无振动、无噪声等特点。
- 设有平衡锤装置。阀瓣旋启时对水流的阻力小,开阀力仅为原旋启式的五分之一,为节能性产品。
- 阀瓣关闭的后段行程设有阻尼装置,且阻尼时间可调,可防止破坏性水锤的产生。
- 新颖包胶阀瓣设计、密封可靠、防腐蚀、减振耐磨、使用寿命长、运行平稳、噪音低。
Product Parameters
产品型号 | HH44X-16Q |
阀体材质 | 球墨铸铁 |
公称压力 | ≤1.6Mpa |
适用介质 | 水等 |
适用温度 | ≤80°C |
Product Size Reference

通径 | L | D | D1 | D2 | n-φ |
DN40 | 290 | 145 | 110 | 105 | 4-18 |
DN50 | 290 | 165 | 125 | 122 | 4-18 |
DN65 | 290 | 185 | 145 | 138 | 4-18 |
DN80 | 310 | 200 | 160 | 158 | 8-18 |
DN100 | 350 | 220 | 180 | 188 | 8-18 |
DN125 | 350 | 250 | 210 | 212 | 8-18 |
DN150 | 480 | 285 | 240 | 268 | 8-23 |
DN200 | 500 | 340 | 295 | 320 | 12-23 |
DN250 | 600 | 405 | 355 | 378 | 12-25 |
DN300 | 700 | 460 | 410 | 428 | 12-25 |
DN350 | 800 | 520 | 470 | 490 | 16-26 |
DN400 | 900 | 580 | 525 | 550 | 16-30 |




















