特徵
雙法蘭型 | 結構簡單，連接穩定 |
阀座設計 | PTFE/PFA襯裡 |
操作週期 | 超過 50,000 次 |
洩漏水平 | 密封嚴實，無洩漏 |
低扭力 | 操作簡便靈活 |
雙向密封 | 任何安裝位置 |
低流阻 | 提高流體效率並降低能耗 |
塗層等級 | C1-C5 和 CX 的常規和特殊情況 |
應用 | 高腐蝕性、有毒介質、酸、鹼、超純水 |
證書 | ISO9001、CE、WRAS、ACS |
規格
設計標準 | EN 593，API 609 |
標準型頂部法蘭 | ISO 5211 |
標準端法蘭 | EN 1092 PN6/10/16、ANSI 125LB/150LB |
面對面維度 | API 609、EN558-1 系列 13 |
測試標準 | API 598，EN12266 |
溫度 | -10℃~150℃（取決於密封材料） |
身體材料 | 球墨鑄鐵、碳鋼、不鏽鋼 |
光碟材料 | CS+PTFE/PFA，SS+PTFE/PFA |
軸材料 | 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） |
操作員 | 槓桿、齒輪箱、氣動、電動執行器 |
尺寸
| 尺寸 | L | □對/錯 | PN10 | PN16 | 美國國家標準協會 150磅 | 頂部 法蘭 | ||||||
| F D | n - F d | n-M | F D | n - F d | n-M | F D | n - F d | 沒有任何 | ||||
| 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.