PTFE PFA Lined Flange Butterfly Valve
Features
Double Flange Type |
Simple structure & Stable connection |
Seat Design |
PTFE/PFA Lined |
Operation Cycles |
Over 50,000 times |
Leakage Level |
Bubbles-tight sealing with no leakage |
Low Torque |
Operation easy and flexible |
Bidirectional Sealing |
Any installation position |
Low Flow Resistance |
Improve fluid efficiency and reduce energy consumption |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Application |
Highly corrosive, toxic medium, acid, alkali, ultrapure water |
Certificates |
ISO9001, CE, WRAS, ACS |
Specifications
Design Standard |
EN 593, API 609 |
Top Flange Standard |
ISO 5211 |
End Flange Standard |
EN 1092 PN6/10/16, ANSI 125LB/150LB |
Face to Face Dimension |
API 609, EN558-1 Series 13 |
Testing Standard |
API 598, EN12266 |
Temperature |
-10℃~150℃(depends on the sealing material) |
Body Material |
Ductile Iron, Carbon Steel, Stainless Steel |
Disc Material |
CS+PTFE/PFA, SS+PTFE/PFA |
Shaft Material |
SS410/SS416/SS420, SS431, 17-4PH, F304/F316/F51/F53, K500 |
Seat Material |
PTFE, PFA |
Operator |
Lever, Gearbox, Pneumatic, Electric Actuator |
Dimension
| Size | L | □T/Ф | PN10 | PN16 | ANSI 150LB | Top Flange | ||||||
| Ф D | n - Ф d | n - M | Ф D | n - Ф d | n - M | Ф D | n - Ф d | n - UN | ||||
| 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.