Features of PFA Coated Lug Butterfly Valve
- PFA-lined cf3m disc: CF3M is equivalent to SS316L, but has enhanced corrosion resistance, making it ideal for highly corrosive environments. So the PFA lined disc has superior chemical resistance compared to PTFE. It can handle highly corrosive chemicals such as hydrofluoric acid, nitric acid, and strong bases.
- Excellent high temperature performance: PFA material can withstand high temperature environments, ensuring the reliability and performance stability of the valve under high temperature conditions.
- PTFE seat: Well-known as the king of plastics, it provides a non-stick surface and chemical compatibility with a wide range of fluids.
- Simple structure and operation: The PTFE lug butterfly valve adopts a simple structural design. It is easy to operate and does not require complicated maintenance work, and it can reduce maintenance costs and operation difficulty.
- Lug design enables the valve to be installed in a pipeline where one side of the pipeline can be removed without disturbing the other side.This is called dead end service.
- The worm gear transfer rotational motion from a handwheel into linear motion to rotate the PFA paint lug butterfly valve disc.
Material Options of Lug Butterfly Valve
| Parts | Ductile Iron type | WCB type | Stainless Steel Type | Duplex Stainless Steel Type |
|---|---|---|---|---|
| Body | Cast Iron(GG25) Ductile Iron(GGG40/50) |
A216 A217 A105(forged) |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M |
2205 2507 1.4529 |
| Disc | Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529 |
2205 2507 1.4529 |
|
| Seat | NBR, EPDM, PTFE, Viton, Hypalon, Silicon, PFA | |||
| Stem | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel | Duplex Stainless Steel, Monel | ||
| Actuator | Hand Lever, Worm Gear, Electric, Pneumatic | |||
Standards of PFA Disc Lug Butterfly Valve
| ITEM | Standard |
|---|---|
| Nominal Diameter Range | DN50-DN600 |
| Design | EN593 | API609 |
| Face to Face | EN558 | ISO5752 | API608 | BS5155-4 |
| Top Flange | ISO5211 |
| Flange Drilling | PN6 | PN10 | PN16 | ASME B16.5 CL150 | JIS 10K |
| Pressure Rating | PN6 | PN10 | PN16 | PN25 | CL150 | JIS 10K |
| Tightness Test | ISO5208 | API598 | EN12266-1 |
Parameters of Hard-Back Seat Lug Butterfly Valve
| SIZE | øD | øD1 | L | H | H1 | H2 | øS | ∅2 | ø3 | 4-ød1 | T*T | øF | K | KEY |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN50 | 76.3 | 52.8 | 42 | 32 | 161 | 80 | 35.5 | 50 | 77 | 8 | 9 | |||
| DN65 | 89 | 64.6 | 44.7 | 32 | 175 | 89 | 35.5 | 50 | 77 | 8 | 9 | |||
| DN80 | 103.9 | 79.1 | 45.2 | 32 | 181 | 95 | 35.5 | 50 | 77 | 8 | 9 | |||
| DN100 | 135 | 104.4 | 52.1 | 32 | 200 | 114 | 55.25 | 70 | 90 | 10 | 11 | |||
| DN125 | 159 | 123.3 | 54.4 | 32 | 213 | 127 | 55.25 | 70 | 90 | 10 | 14 | |||
| DN150 | 188.4 | 155.6 | 55.8 | 32 | 226 | 146 | 55.25 | 70 | 90 | 10 | 14 | |||
| DN200 | 238.2 | 202.5 | 60.6 | 45 | 260 | 175 | 70.25 | 102 | 125 | 12 | 17 | |||
| DN250 | 292.4 | 250.5 | 65.6 | 45 | 292 | 203 | 70.25 | 102 | 125 | 12 | 22 | |||
| DN300 | 344.2 | 301.6 | 76.5 | 45 | 337 | 242 | 70.25 | 102 | 140 | 12 | 31.6 | 34.9 | 8*35 | |
| DN350 | 375.2 | 333.4 | 76.5 | 45 | 368 | 267 | 70.25 | 102 | 140 | 12 | 31.6 | 34.9 | 8*35 | |
| DN400 | 439.5 | 389.6 | 86.5 | 52 | 400 | 300 | 100.25 | 140 | 197 | 18 | 33.2 | 36.5 | 10*45 | |
| DN450 | 490.5 | 440.5 | 103.5 | 52 | 422 | 324 | 100.25 | 140 | 197 | 18 | 37.95 | 41.25 | 10*45 | |
| DN500 | 535.4 | 491.6 | 129.4 | 65 | 480 | 365 | 100.25 | 140 | 197 | 18 | 41.12 | 44.42 | 10*55 | |
| DN600 | 653.7 | 592.5 | 152 | 70 | 562 | 444 | 130.25 | 165 | 276 | 22 | 50.63 | 54.93 | 16*65 |
Application of PFA Coated Butterfly Valve
- Chemical Processing Plants:
-Handling highly corrosive chemicals including strong acids and solvents.
-For use in processes involving hydrofluoric acid, sulfuric acid and chlorine compounds.
- Pharmaceutical and Biotech Industries:
-Ensure purity and contamination-free operation in drug manufacturing.
-Ideal for sterile and high purity fluid handling applications.
- Semiconductor and Electronics Manufacturing
-For use in ultrapure water and chemical etching processes.
-Resistant to highly corrosive etching chemicals such as hydrofluoric acid.
- Pulp and Paper Industry
-Manages corrosive bleaches such as chlorine dioxide and sodium hypochlorite.
- Mining and Metallurgy
-For use in acid leaching, metal extraction and chemical refining processes.
-Resistant to highly concentrated acids and corrosive slurries.
- Water Treatment and Desalination
-For use in brine and high salt environments.
- Food and Beverage Industry
-For use in highly hygienic applications requiring non-reactive materials.
- Oil and Gas Industry
-For use in chemical injection systems, offshore platforms and corrosive media delivery.
-Resistant to sour gases and corrosive petroleum derivatives.
Manufacture Process of Butterfly Valve
Certificates of Zfa Butterfly Valve Company
WRAS
CE
ISO 9001
EAC Russia
FAQ of PFA Paint Disc PTFE Seat Lug Butterfly Valve
Q1: What is the difference between the PFA coating on the CF3M disc and a traditional PTFE lining?
A1: Both offer excellent corrosion resistance, but the key difference lies in pressure-bearing capacity. A CF3M disc with a PFA coating can withstand pressures up to PN25. In contrast, PTFE-lined discs typically have a pressure rating of PN10.
Q2: Can this PFA-lined CF3M butterfly valve be used for end-of-line (dead-end) service?
A2: Yes. Its rigid-backed seat design with threaded lugs facilitates secure installation between flanges and allows for the removal of downstream piping for maintenance without affecting the pressurized upstream section.
