Features of Pneumatic PFA Disc Butterfly Valve
WCB (ASTM A216 Gr. WCB) butterfly valve made of carbon steel, offering durability and strength for industrial environments. It is suitable for moderate to high-pressure applications
PTFE seat of the butterfly valve is known as the “King of Plastics.” PTFE provides excellent corrosion resistance against acids, alkalis, organic solvents, and other aggressive chemicals. And it offers non-stick and low-friction properties for smooth operation.
PFA disc butterfly valve: PFA enhances corrosion resistance and durability, especially for highly corrosive fluids like wet/dry chlorine gas or hydrochloric acid of the butterfly valve disc. PFA extends product life by resisting permeation and offers non-stick properties for smoother flow control.
Composition and function of the triplex pneumatic butterfly valve
Filter
The filter cleans compressed air by removing impurities and moisture, ensuring pure air enters the pneumatic actuator. This prevents pipeline blockages and reduces actuator wear.
Pressure Regulating Valve
The pressure regulating valve stabilizes air pressure entering the actuator, preventing irregular operation and excessive valve wear. It maintains safe pressure levels, extending actuator life and ensuring smooth performance.
Lubricator
The lubricator adds a small amount of oil to the air, reducing friction in the actuator for smoother operation. Lubrication is vital for frequent valve use, extending equipment life and ensuring proper function.
Basic Info of PFA Disc Butterfly Valve
Material
| Part Name | Material/Method |
| Body | Ductile Iron, Casting Iron, WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze |
| Disc | Ductile Iron(Coated/Lined), WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze |
| Seat | Rubber(EPDM/NBR/VITON), Nature Rubber, Silicon Rubber, PU, HNBR, Hypalon |
| Stem | 304, 316, 420(2Cr13), 431, 1.4462, 17-4PH, Monel |
| Actuator | Pneumatic, Handlever, Worm Gear, Electric |
Technical Parameters
| ITEM | Standard |
| 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 |
Dimensions of Pneumatic PFA Disc Wafer Butterfly Valve
| SIZE | øD | øD1 | L | H | H1 | H2 | ø2 | ø3 | 4-ød1 | T*T |
| DN40 | 72 | 43 | 33 | 25 | 121 | 61 | 50 | 65 | 7 | 9 |
| DN50 | 76.3 | 52.8 | 42 | 25 | 131 | 66 | 50 | 65 | 7 | 9 |
| DN65 | 89 | 64.6 | 44.7 | 25 | 142 | 71 | 50 | 65 | 7 | 9 |
| DN80 | 103.9 | 79.1 | 45 | 25 | 150 | 83 | 50 | 65 | 7 | 9 |
| DN100 | 135 | 104.4 | 51.2 | 25 | 170 | 102 | 70 | 90 | 10 | 11 |
| DN125 | 159 | 123.3 | 54.4 | 25 | 184 | 117 | 70 | 90 | 10 | 14 |
| DN150 | 188.4 | 155.6 | 55 | 25 | 200 | 130 | 70 | 90 | 10 | 14 |
| DN200 | 238.2 | 202.5 | 58.8 | 35 | 240 | 162 | 70 | 90 | 10 | 17 |
| DN250 | 292.4 | 250.5 | 65.7 | 35 | 270 | 196 | 102 | 125 | 12 | 22 |
| DN300 | 344.2 | 301.6 | 76 | 35 | 310 | 216 | 102 | 125 | 12 | 22 |
| DN350 | 375.2 | 333.4 | 76.5 | 45 | 368 | 260 | 102 | 140 | 12 | 22 |
| DN400 | 439.5 | 389.6 | 85.7 | 50 | 400 | 315 | 140 | 175 | 18 | 27 |
| DN450 | 490.5 | 440.5 | 104.6 | 50 | 422 | 340 | 140 | 175 | 18 | 27 |
| DN500 | 535.4 | 491.6 | 130.2 | 55 | 480 | 379 | 140 | 175 | 18 | 32 |
| DN600 | 654.3 | 592.5 | 151.3 | 68 | 562 | 438 | 165 | 210 | 23 | 36 |
Application of Pneumatic Wafer PFA Disc Butterfly Valve
- Chemical Industry: Handles corrosive fluids like acids, alkalis, and solvents.
- Food and Beverage: Suitable for sanitary applications due to PTFE’s non-stick and FDA-compliant properties.
- Water Treatment: Manages seawater, sewage, and other fluids.
- Pharmaceuticals: Ensures contamination-free operation in sensitive processes
Key Considerations for Choosing a Pneumatic Actuator
- Match: Select an actuator that fits the valve size and type for proper system operation.
- Control Mode: Choose the right control mode (e.g., double-acting or single-acting) based on process and control needs.
- Environmental Conditions: Consider temperature, humidity, and corrosion at the installation site, and select suitable actuator materials and protection levels.
- Control Signals: Ensure the actuator’s control signal types and interfaces are compatible with the control system.
Manufacture Process of Butterfly Valve
ZFA Certificates
WRAS
CE
ISO 9001
EAC Russia
