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China PTFE Seat Wafer Butterfly Valve Suppliers - High Temperature & Corrosive Media Factory Solutions
Product Details
PTFE Seat Butterfly Valve provides the perfect balance of durability, chemical resistance, and cost-effectiveness. Whether for corrosive fluids or demanding industrial processes, this valve ensures stable performance and long service life.
The PTFE seat offers outstanding resistance to acids, alkalis, solvents, and corrosive chemicals, making it ideal for aggressive media applications. The resilient PTFE seat provides bubble-tight sealing in both low and high-pressure systems, ensuring zero leakage and enhanced operational safety.
Key Features
🧪
Superior Chemical Resistance
🔒
Excellent Sealing Performance
⚙️
Low Operating Torque
🌡️
Wide Temperature Range
Specification

| No. | Parts | Materials |
|---|---|---|
| 1 | Body | GGG40 |
| 2 | Disc/shaft one piece | CF8M |
| 3 | Seat | PTFE, FPM, EPDM, PU, NBR |
| 4 | Seat Energizer | SR |
| 5 | Weather seal | NBR |
| 6 | Bearing | PTFE impregnated SS316L |
| 7 | Gland | PTFE |
| 8 | Screw | SS304 |
| 9 | Belleville washer | SS304 |
| 10 | Stuffing collar | SS316 |
| 11 | O ring | FPM |
| 12 | V ring | PTEF |
Dimensions
| in | DN | H1 | H2 | C | L | A | B |
|---|---|---|---|---|---|---|---|
| 2 | 50 | 102 | 53 | 60 | 92 | 8 | 16 |
| 2.5 | 65 | 109 | 61 | 76 | 102 | 8 | 16 |
| 3 | 80 | 112 | 68 | 89 | 102 | 8 | 16 |
| 4 | 100 | 136 | 85 | 114 | 116 | 10 | 16 |
| 5 | 125 | 166 | 100 | 141 | 125 | 10 | 16 |
| 6 | 150 | 177 | 113 | 165 | 125 | 10 | 16 |
| 8 | 200 | 234 | 143 | 216 | 138 | 11 | 19 |
| 10 | 250 | 266 | 178 | 273 | 159 | 13 | 19 |
| 12 | 300 | 270 | 230 | 324 | 166 | 13 | 19 |
Frequently Asked Questions
❓What makes the PTFE seat butterfly valve suitable for corrosive media?
The PTFE seat provides outstanding resistance to acids, alkalis, solvents, and a wide range of corrosive chemicals. This makes it an ideal choice for aggressive media applications where standard elastomer seats would degrade quickly.
❓What seat materials are available for this butterfly valve?
This butterfly valve is available with multiple seat material options including PTFE, FPM, EPDM, PU, and NBR, allowing customers to select the most appropriate material based on their specific media and operating conditions.
❓What is the body material of this butterfly valve?
The valve body is made from GGG40 (ductile iron), which offers excellent mechanical strength and durability. The disc and shaft are manufactured as one piece from CF8M (316 stainless steel) for enhanced corrosion resistance.
❓What size range is available for the PTFE seat butterfly valve?
The valve is available in sizes ranging from 2 inches (DN50) up to 12 inches (DN300), covering a broad range of pipeline requirements for industrial applications.
❓Does this valve provide bubble-tight sealing performance?
Yes. The resilient PTFE seat is designed to deliver bubble-tight sealing in both low and high-pressure systems, ensuring zero leakage and enhanced operational safety across all supported pressure ranges.
❓What are the key advantages of the low operating torque design?
The low operating torque design reduces the effort required to open and close the valve, enabling easier manual operation and allowing the use of smaller, more cost-effective actuators. This also contributes to longer service life of both the valve and actuator components.
Product Packaging
01020304





















