The pneumatic Fluorine-Lined butterfly valve has its flow components (valve body inner wall, butterfly plate, valve seat) lined with polytetrafluoroethylene (PTFE) or PVDF material, possessing acid and alkali resistance and aging resistance, and is suitable for a temperature range of -40℃ to 180℃. This valve adopts a center-line sealing structure, with the butterfly plate rotating 90 degrees to achieve opening and closing. The valve body is available in split or flanged designs.
The sealing system is composed of fluororubber/PTFE, supporting bidirectional sealing with zero leakage, maintaining sealing performance even after more than 50,000 pressurized opening and closing cycles. The pneumatic actuator can be selected as the AT type (gear drive), with matching limit switch boxes and other accessories to meet the needs of rapid shut-off or proportional regulation.
Nominal diameters cover DN50 to DN1000, and pressure ratings reach PN1.6MPa, suitable for atmospheric pressure to medium and low pressure conditions. It is suitable for media such as sulfuric acid, hydrofluoric acid, and organic solvents, and has wide applications in flue gas desulfurization, acid and alkali transportation, and other scenarios.
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Fluorine-Lined Pneumatic Butterfly Valve Technical parameters
Size Range: DN40–DN1000
Pressure Range: PN6–PN16
End Connection: Flanged or Wafer
Material: Carbon Steel/Fluorine-Lined
Seals: PTFE or FEP
Valves Design: Pneumatic Actuated Butterfly Valve
Face to Face: ISO 5752
Testing & Inspection: API 598 Standards
Suitable Medium: Corrosive liquids, gases, and chemical solutions
Pneumatic PTFE-lined butterfly valve structural features:
1. Small size, light weight, easy operation, convenient installation and maintenance.
2. Excellent and reliable sealing performance, zero leakage, and long service life.
3. Flow characteristics approach linear, with optimal regulation performance.
4. Simple structure, rapid opening and closing, 90° rotation.
5. Can replace various valves such as gate valves, globe valves, plug valves, hose valves, and diaphragm valves.
6. Can be configured with pneumatic or electric actuators according to user needs, meeting remote control and programmable control requirements.
7. Changing the lining material of parts makes it suitable for various media.
Main Spare Part Bill of Fluorine-Lined Pneumatic Butterfly Valve Materials
| Serial No. | Part Name | Grey Cast Iron (Z) | Carbon Steel (C) | Stainless Steel (P) | Stainless Steel (R) | Low Carbon Stainless Steel (PL) | Low Carbon Stainless Steel (RL) |
|---|---|---|---|---|---|---|---|
| 1 | Upper and Lower Body | HT250 | WCB | CF8 | CF8M | CF3 | CF3M |
| 2 | Disc | - | WCB | CF8 | CF8M | CF3 | CF3M |
| 3 | Butterfly Plates | 1Cr13 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr18Ni14Mo2 |
| 4 | Lining Layer / Seat | PTFE (F4), PCTFE (F3), FEP (F46), PFA (optional F4), PO (Polyolefin) | |||||
| 5 | O-Ring | FPM (Fluorine Rubber/Viton) | |||||
| 6 | Spring Section (Pad) | Si (Silicone Rubber) | |||||
| 7 | Adjustment in Block | 0Cr18Ni9 | 0Cr18Ni9 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | 00Cr18Ni10 | 00Cr18Ni14Mo2 |
| 8 | Bolt | 35 | 35 | 1Cr17Ni2 | 1Cr17Ni2 | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
| 9 | Nut | 45 | 45 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 | 0Cr18Ni9 |
| 10 | Handle | ZL 101 (Cast Aluminum Alloy) | |||||
Fluorine-Lined Pneumatic Butterfly Valve Main Connection Dimension and Weight
Nominal Pressure: PN0.6MPa
| DN (mm) | NPS (inch) | L (mm) | D (mm) | D1 (mm) | D2 (mm) | F (mm) | B (mm) | Z–ød (Bolts) | D0 (mm) | H1 (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 1 1/2 | 33 | 130 | 100 | 80 | 3 | 16 | 4–ø14 | 160 | 140 | 2.5 |
| 50 | 2 | 43 | 140 | 110 | 90 | 3 | 16 | 4–ø14 | 200 | 145 | 3.5 |
| 65 | 2 1/2 | 46 | 160 | 130 | 110 | 3 | 16 | 4–ø14 | 250 | 155 | 4.5 |
| 80 | 3 | 46 | 185 | 150 | 125 | 3 | 18 | 4–ø18 | 250 | 165 | 6 |
| 100 | 4 | 52 | 205 | 170 | 145 | 3 | 18 | 4–ø18 | 300 | 180 | 7.5 |
| 125 | 5 | 56 | 235 | 200 | 175 | 3 | 20 | 8–ø18 | 300 | 203 | 11 |
| 150 | 6 | 56 | 260 | 225 | 200 | 3 | 20 | 8–ø18 | 300 | 225 | 16 |
| 200 | 8 | 60 | 315 | 280 | 255 | 3 | 22 | 8–ø18 | 200* | 275 | 48 |
| 250 | 10 | 68 | 370 | 335 | 310 | 3 | 24 | 12–ø18 | 200* | 315 | 60 |
| 300 | 12 | 78 | 435 | 395 | 368 | 4 | 24 | 12–ø23 | 240* | 348 | 75 |
| 350 | 14 | 85 | 485 | 445 | 412 | 4 | 26 | 12–ø23 | 240* | 415 | 82 |
| 400 | 16 | 102 | 535 | 495 | 465 | 4 | 28 | 16–ø23 | 280* | 460 | 123 |
| 450 | 18 | 114 | 590 | 550 | 518 | 4 | 28 | 20–ø23 | 320* | 500 | 150 |
| 500 | 20 | 127 | 640 | 600 | 568 | 4 | 30 | 16–ø23 | 320* | 530 | 180 |
| 600 | 24 | 154 | 755 | 705 | 670 | 5 | 30 | 20–ø25 | 320* | 620 | 230 |
| 700 | 28 | 165 | 860 | 810 | 775 | 5 | 32 | 24–ø25 | 360* | 675 | 315 |
| 800 | 32 | 190 | 975 | 920 | 880 | 5 | 34 | 24–ø30 | 360* | 805 | 385 |
| 900 | 36 | 203 | 1075 | 1020 | 980 | 5 | 36 | 24–ø30 | 380* | 995 | 420 |
| 1000 | 40 | 216 | 1175 | 1120 | 1080 | 5 | 36 | 28–ø30 | 400* | 1170 | 620 |
| 1200 | 48 | 254 | 1400 | 1340 | 1295 | 5 | 40 | 32–ø34 | 400* | 1295 | 788 |
Fluorine-Lined Pneumatic Butterfly Valve Applications
- Chemical Industry: Used for raw material transportation, reactor inlet and outlet control, and handling strong acids such as hydrochloric acid and sulfuric acid, as well as organic solvents.
- Oil & Gas Industry: Meets the needs of offshore oil platforms and shale gas extraction, controlling the flow and pressure of oil, gas, and water.
- Power Industry: Applicable to thermal power plant circulating water systems, chemical water treatment systems, and hydropower inlets and outlets.
- New Energy Industry: Used in wind power generation cooling systems and photovoltaic power generation energy storage systems for controlling fluid transportation and regulation.
- Biopharmaceutical Industry: Transports high-purity raw materials, intermediates, and finished products, preventing media contamination and ensuring drug quality.
- Electronics & Information Industry: Controls the transportation of high-purity gases and chemical reagents in semiconductor manufacturing, meeting high cleanliness and low leakage requirements.
- Food & Beverage Industry: Used in beverage bottling, food processing, and packaging, meeting food-grade hygiene requirements.
- Environmental Protection Industry: Controls flow and direction in wastewater transportation and exhaust gas treatment systems in wastewater treatment plants, adapting to corrosive components.
