A fluorine-lined gate valve controls the flow of corrosive fluids in industries like chemical processing and water treatment. The internal surfaces are coated with a fluorine lining, providing resistance to chemical corrosion.
The valve operates by raising or lowering a gate to start or stop fluid flow. When fully open, it allows fluid to pass through with minimal pressure drop. This design is suitable for on-off applications, ensuring the medium is isolated without contact with internal components.
| Name/Material | WCB | CF8 | CF3 | CF8M | CF3M |
| Body | WCB | CF8 | CF3 | CF8M | CF3M |
| Stem | WCB | CF8 | CF3 | CF8M | CF3M |
| Plug | WCB | CF8 | CF3 | CF8M | CF3M |
| Lined | FEP / PFA / PO / PTFE | ||||
| Seat | PTFE / RPTFE | ||||
| Bolt/Nut | B7/2H | B8/8 | B8/8 | B8M/8M | B8M/8M |
| Design&Manufacture Standard | GB/T12234 | API 6D | ||
| FTF Dimension Standard | HG/T3704, GB/T12221 | ASME B16.10 | ||
| Flange standard | HG/T20592, GB/T9119 | ASME B16.5, JIS B2220 | ||
| Inspection & Test Standard | HG/T13927, JB/T9092 | API 598 | ||
| Normal Diameter | DN15~DN350 | 1/2”~14” | ||
| Normal Pressure | 1.0MPa | 1.6MPa | 150LB | |
| Test pressure | Shell Test | 1.5MPa | 1.5MPa | 1.5MPa |
| High Pressure Test | 1.1MPa | 1.1MPa | 1.1MPa | |
| Low Pressure Test | 0.6MPa | 0.6MPa | 0.6MPa | |
| Temperature Range | FEP:-29℃~120℃, PFA:-29℃~180℃, PTFE:-29℃~150℃ | |||
| Applicable Medium | Strong corrosion medium: Hydrochloric acid, Nitric acid, Hydrofluoric acid, Liquid chlorine, Sulfuric acid and Aqua regia etc. | |||
| DN (mm | PNS (Inch) | L | D | D1 | D2 | f | b | Z-Φd | H |
| 25 | 1 | 160 | 115 | 85 | 65 | 3 | 17 | 4-14 | 230 |
| 32 | 1-1/4 | 180 | 140 | 100 | 75 | 3 | 19 | 4-18 | 245 |
| 40 | 1-1/2 | 240 | 150 | 110 | 85 | 3 | 19 | 4-18 | 285 |
| 50 | 2 | 250 | 165 | 125 | 100 | 3 | 21 | 4-18 | 300 |
| 65 | 2-1/2 | 270 | 185 | 145 | 120 | 3 | 21 | 4-18 | 340 |
| 80 | 3 | 280 | 200 | 160 | 135 | 3 | 21 | 8-18 | 410 |
| 100 | 4 | 300 | 220 | 180 | 155 | 3 | 23 | 8-18 | 465 |
| 125 | 5 | 325 | 250 | 210 | 185 | 4 | 24 | 8-18 | 620 |
| 150 | 6 | 350 | 285 | 240 | 210 | 4 | 26 | 8-23 | 710 |
| 200 | 8 | 400 | 340 | 295 | 265 | 4 | 26 | 8/12-23 | 780 |
| 250 | 10 | 450 | 395 | 350 | 320 | 4 | 28 | 12-23/26 | 1000 |
Fluorine-lined gate valve is a kind of valve. The opening and closing part of the fluorine-lined gate valve is the gate plate. The direction of movement of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, not adjusted and throttled. The gate has two sealing surfaces. The most commonly used mode is that the two sealing surfaces of the gate valve form a wedge shape. The wedge angle varies with the valve parameters.
The fluorine lining protects the valve from corrosive chemicals, making it suitable for harsh environments and aggressive fluids.
The lining enhances the durability of the valve, reducing wear and increasing longevity, even in challenging applications.
Fluorine-lined gate valves perform well in a range of temperatures, ensuring reliable operation in both high and low-temperature environments.
The fluorine lining prevents the fluid from reacting with the valve body, ensuring purity in sensitive processes.
The smooth internal lining reduces friction, allowing for easier operation and reduced wear on the valve components over time.
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