D641F-16QPneumatic Flanged PTFE Butterfly ValveReliable performance, simple configuration, and high flow capacity make it particularly suitable for viscous, particulate, or fibrous media. Designed for temperatures ≤150°C, it serves as a flow regulator and flow-interrupting device in pipelines across industries including light textiles, papermaking, food, pharmaceuticals, chemicals, petroleum, power generation, water supply and drainage, and gas systems.
Product Features
- Innovative and rational design, lightweight structure, rapid opening and closing.
- Low operating torque, easy to operate, effortless and nimble.
- Can be installed in any location for easy maintenance.
- The seals are replaceable and provide reliable bidirectional sealing with zero leakage.
Product Parameters
产品型号 | D641F-16Q |
阀体材质 | 球墨铸铁 |
阀板材质 | 304不锈钢 |
衬胶材质 | PTFE Polytetrafluoroethylene |
气缸材质 | 铝合金 |
气缸类型 | AT double acting |
公称压力 | ≤1.6Mpa |
适用介质 | 水、气、油品等 |
适用温度 | ≤150°C |
Product Size Reference

通径 | L | T | H | S | Q | K | D | n-d |
DN50 | 108 | 147 | 130 | 71.5 | 92 | 83 | 125 | 4-18 |
DN65 | 112 | 168 | 140 | 83 | 108 | 93 | 145 | 4-18 |
DN80 | 114 | 186 | 150 | 95 | 119.5 | 100 | 160 | 8-18 |
DN100 | 127 | 212 | 165 | 103 | 128.7 | 110 | 180 | 8-18 |
DN125 | 140 | 262 | 180 | 108.5 | 136.5 | 123 | 210 | 8-18 |
DN150 | 140 | 268 | 200 | 121.5 | 153 | 143 | 240 | 8-22 |
DN200 | 152 | 301 | 230 | 142 | 185 | 171 | 295 | 12-22 |
DN250 | 165 | 390 | 270 | 152 | 202 | 203 | 355 | 12-26 |
DN300 | 178 | 458 | 320 | 174 | 227 | 230 | 410 | 12-26 |
DN350 | 190 | 534 | 350 | 206 | 260 | 260 | 470 | 16-26 |
DN400 | 216 | 538 | 390 | 226 | 285 | 285 | 525 | 16-30 |














