特征
双法兰型 | 结构简单，连接稳定 |
阀座设计 | PTFE/PFA衬里 |
操作周期 | 超过 50,000 次 |
泄漏水平 | 密封严实，无泄漏 |
低扭矩 | 操作简便灵活 |
双向密封 | 任何安装位置 |
低流阻 | 提高流体效率并降低能耗 |
涂层等级 | C1-C5 和 CX 的常规和特殊情况 |
应用 | 高腐蚀性、有毒介质、酸、碱、超纯水 |
证书 | ISO9001、CE、WRAS、ACS |
规格
设计标准 | EN 593，API 609 |
上法兰标准 | ISO 5211 |
侧法兰标准 | EN 1092 PN6/10/16、ANSI 125LB/150LB |
面对面尺寸 | API 609、EN558-1 系列 13 |
测试标准 | API 598，EN12266 |
温度 | -10℃~150℃（取决于密封材料） |
阀体材质 | 球墨铸铁、碳钢、不锈钢 |
阀座材质 | CS+PTFE/PFA，SS+PTFE/PFA |
阀轴材质 | SS410/SS416/SS420、SS431、17-4PH、F304/F316/F51/F53、K500 |
阀座材料 | 聚四氟乙烯（PTFE）、全氟烷基因式氟乙烯（PFA） |
驱动 | 杠杆、齿轮箱、气动、电动执行器 |
尺寸
| 尺寸 | L | □对/错 | PN10 | PN16 | 美国国家标准协会 150磅 | 顶部 法兰 | ||||||
| Ф D | n - F d | n-M | Ф D | n - F d | n-M | Ф D | n - F d | 没有任何 | ||||
| DN50 | 108 | 9*9 | 125 | 4-19 | 125 | 4-19 | 120.7 | 4-20 | F07 | |||
| DN65 | 112 | 9*9 | 145 | 4-19 | 145 | 4-19 | 139.7 | 4-20 | F07 | |||
| DN80 | 114 | 9*9 | 160 | 8-19 | 160 | 8-19 | 152.4 | 4-20 | F07 | |||
| DN100 | 127 | 11*11 | 180 | 8-19 | 180 | 8-19 | 190.5 | 8-20 | F07 | |||
| DN125 | 140 | 14*14 | 210 | 8-19 | 210 | 8-19 | 215.9 | 8-23 | F07 | |||
| DN150 | 140 | 14*14 | 240 | 8-23 | 240 | 8-23 | 241.3 | 8-23 | F07 | |||
| DN200 | 152 | 17*17 | 295 | 8-23 | 295 | 8-23 | 4-M20 | 298.5 | 8-23 | F10 | ||
| DN250 | 165 | 22*22 | 350 | 8-23 | 4-M20 | 355 | 8-28 | 4-M24 | 362 | 8-26 | 4-7/8"-9UNC | F10 |
| DN300 | 178 | 22*22 | 400 | 8-23 | 4-M20 | 410 | 8-28 | 4-M24 | 431.8 | 8-26 | 4-7/8"-9UNC | F10 |
| DN350 | 190 | 22*22 | 460 | 12-23 | 4-M20 | 470 | 12-28 | 4-M24 | 476.3 | 8-29 | 4-1"-8UNC | F10 |
Why Choose PFA/PTFE Lined Flange Butterfly Valve?
Typical Applications
PTFE/PFA lined flange butterfly valve is a corrosion-resistant valve specifically designed for harsh working conditions. The core design is to fully liner a layer of high-performance fluoroplastic (PTFE or PFA) on key components such as the metal valve body cavity and butterfly plate. This lining completely isolates the metal valve body from corrosive media, making it an ideal choice for handling fluids such as strong acids and alkalis.
PTFE/PFA lined flanged butterfly valves are specially engineered for demanding services involving strong acids, caustic alkalis, toxic media, and ultrapure water. They are widely deployed in chemical processing, semiconductor manufacturing, pharmaceuticals, new energy, and environmental protection. These valves safely handle highly corrosive or high‑purity fluids, including concentrated sulfuric acid, hydrochloric acid, hydrofluoric acid, organic solvents, electrolytes, and ultrapure water. With bubble‑tight shut‑off, 180°C temperature resistance, low operating torque, and virtually maintenance‑free performance, they deliver reliable protection for critical process applications.