Model DH77XButterfly check valveIt consists of parts such as valve body, valve flap, valve stem and spring, and adopts butt-clamp connection. Due to the short closing stroke of the valve flap and spring loading, the water hammer phenomenon can be significantly reduced. Thecheck valveMainly used in urban, industrial and high-rise building water supply and drainage network. Because of its structure length is shorter than the general check valve, it is most suitable for places with installation space limitation. Butterfly check valve for pure pipeline and industry, environmental protection, water treatment, high-rise building water supply and drainage pipeline, to prevent the media reverse flow.
Product Features
- 体积小,重量轻,结构紧凑、维修方便;
- 阀板采用对偶式设计,在弹簧的弹性力矩下可自行速闭;
- 因速闭作用,可防止介质倒流;
- 阀体结构长度尺寸小,刚性好;
- 安全方便,可用于水平垂直两个方向安装。
Product Parameters
产品型号 | DH77X-16Q |
阀体材质 | 球墨铸铁 |
阀板材质 | 球墨铸铁/304不锈钢 |
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 |
DN40 | 43 | 107 | 65 |
DN50 | 43 | 107 | 65 |
DN65 | 46 | 127 | 80 |
DN80 | 64 | 142 | 94 |
DN100 | 64 | 162 | 117 |
DN125 | 70 | 192 | 145 |
DN150 | 76 | 218 | 170 |
DN200 | 89 | 273 | 224 |
DN250 | 114 | 328 | 265 |
DN300 | 114 | 378 | 310 |
DN350 | 127 | 438 | 360 |
DN400 | 140 | 489 | 410 |
DN450 | 152 | 539 | 450 |
DN500 | 152 | 594 | 505 |
DN600 | 178 | 690 | 624 |
DN700 | 229 | 800 | 720 |




















