Custom Wafer bf valve PTFE seat gear box operation Suppliers, Factory
Product Description
Characteristics
PTFE butterfly valve is a quarter turn valve that controls flow by rotating the valve disc inside the pipeline. Rotate the actuator to rotate the valve stem and disc 90 degrees. When the disc is perpendicular to the flow direction, the valve is completely closed; When the valve disc is parallel to the flow direction, the valve is fully opened, and the position between the two can be used to adjust the flow rate.
Advantages
The PTFE lining on the inner cavity of the valve body and the surface of the butterfly plate has extremely high stability against most corrosive media such as strong acids (such as sulfuric acid, hydrochloric acid), strong bases (such as sodium hydroxide), organic solvents, and salt solutions. It can isolate the metal valve body from contact with the media, avoid corrosion damage, and is suitable for strong corrosion conditions such as chemical, chlor alkali, and pharmaceutical industries.
The clamping design uses double headed bolts to directly clamp between two pipeline flanges, without the need for additional valve flanges. The valve body thickness is only about one-third of that of traditional flange butterfly valves, occupying a small space, especially suitable for scenarios with dense pipelines and limited installation space; Simultaneously simplifying the installation steps can reduce the overall cost of pipeline layout.
Combined with PTFE valve seat and eccentric structure design (single eccentric/double eccentric/triple eccentric), it can achieve a tight fit between the butterfly plate and the valve seat, and achieve zero leakage sealing effect under most working conditions; The low friction characteristics of PTFE can also reduce the wear of the sealing surface during the opening and closing process, extending the sealing life.
Packing
Standard export wooden case packaging
Application Scenarios
In the chemical industry, it is a standard configuration for production lines such as sulfuric acid and chlor alkali; In the pharmaceutical industry, its clean characteristics that comply with GMP standards make it suitable for sterile medium delivery systems; In the desulfurization system of the power industry, it can also effectively solve the problem of valve flushing caused by limestone slurry.
Material
| Body | Disc | Stem | Bushing | Seat | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Name | Code | Name | Code | Name | Name | Name | Code | Working temp (℃) | ||
| Cast iron | Z | Plated ductile iron | B1 | Stainless steel | Lubrized bronze | NR | X1 | -20~+85℃ | ||
| Ductile iron | Q | Aluminum bronze | B2 | Hypalon | X2 | -23~+121℃ | ||||
| Aluminum bronze | T | ZG1Cr18Ni9Ti Stainless steel |
B3 | EPDM | X3 | -23~+121℃ | ||||
| ZG1Cr13Ni9Ti Stainless steel |
P | Titanium steel | B4 | Neoprene | X4 | -7~+93℃ | ||||
| CF8M Stainless steel |
R | CF8M Stainless steel |
B5 | NBR | X5 | -23~+100℃ | ||||
| Carbon steel | C | Carbon steel | B6 | Wear-resistant rubber | X6 | -10~+100℃ | ||||
| CF8 Stainless steel |
CF8 Stainless steel |
B7 | VITON | X7 | -23~+200℃ | |||||
| Hear-resistant rubber | X9 | -23~+135℃ | ||||||||
| PTFE | F4 | +10~+150℃ | ||||||||
Dimension
| DN | A | B | C | D | L | H | D1 | n- φ | K | E | n1- φ 1 | φ 2 | G | n2-M | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | ||||||||||||||
| 50 | 2” | 161 | 80 | 42 | 52.9 | 32 | 84.84 | 120 | 4- φ 23 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 118 | - |
| 65 | 2.5" | 175 | 89 | 44.7 | 64.5 | 32 | 96.2 | 136.2 | 4- φ 26.5 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 137 | - |
| 80 | 3” | 181 | 95 | 45.2 | 78.8 | 32 | 61.23 | 160 | 8- φ 18 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 143 | - |
| 100 | 4” | 200 | 114 | 52.1 | 104 | 32 | 70.80 | 185 | 4- φ 24.5 | 92 | 69.85 | 4- φ 10.3 | 15.77 | 156 | - |
| 125 | 5" | 213 | 127 | 54.4 | 123.3 | 32 | 82.28 | 215 | 4- φ 23 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 190 | - |
| 150 | 6" | 226 | 139 | 55.8 | 155.6 | 32 | 91.08 | 238 | 4- φ 25 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 212 | - |
| 200 | 8" | 260 | 175 | 60.6 | 202.5 | 45 | 112.89 76.35 | 295 | 4- φ 25 4- φ 23 | 115 | 88.9 | 4- φ 14.3 | 22.1 | 268 | - |
| 250 | 10" | 292 | 203 | 65.6 | 250.5 | 45 | 92.40 | 357 | 4- φ 29 | 115 | 88.9 | 4- φ 14.3 | 28.45 | 325 | - |
| 300 | 12" | 337 | 242 | 76.9 | 301.6 | 45 | 105.34 | 407 | 4- φ 29 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 403 | - |
| 350 | 14" | 368 | 267 | 76.5 | 333.3 | 45 | 91.11 | 467 | 4- φ 30 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 436 | - |
| 400 | 16’ | 400 | 309 | 86.5 | 389.6 | 51.2 72 | 100.47 102.42 | 515 525 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 33.15 | 488 | - |
| 450 | 18" | 422 | 328 | 105.6 | 440.51 | 51.2 72 | 88.39 91.51 | 565 585 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 38 | 539 | - |
| 500 | 20" | 480 | 361 | 131.8 | 491.6 | 64.2 82 | 95.99 101.68 | 620 650 | 4- φ 26 4- φ 33 | 197 | 158.75 | 4- φ 20.6 | 41.15 | 593 | - |
| 600 | 24" | 562 | 459 | 152 | 592.5 | 70.2 82 | 113.42 120.46 | 725 770 | 20- φ 30 20- φ 36 | 276 | 215.9 | 4- φ 22.2 | 50.65 | 816 | - |
| 700 | 28" | 624 | 520 | 163 | 695 | 66 82 | 109.65 840 | 840 | 24- φ 30 20- φ 36 | 300 | 254 | 8- φ 18 | 55 63.35 | 895 | 4-M33 |
| 800 | 32" | 672 | 591 | 188 | 794.7 | 66 82 | 124 950 | 950 | 24- φ 33 24- φ 39 | 300 | 254 | 8- φ 18 | 55 63.35 | 1015 | - |
| 900 | 36" | 720 | 656 | 203 | 864.7 | 118 | 117.57 | 1050 | 24- φ 33 | 300 | 254 | 8- φ 18 | 75 | 1115 | 4-M30 |
| 1000 | 40" | 800 | 721 | 216 | 965 | 142 | 129.89 | 1160 | 24- φ 36 | 300 | 254 | 8- φ 18 | 85 | 1230 | 4-M33 |
Frequently Asked Questions (FAQ)
PTFE butterfly valves offer exceptional corrosion resistance against strong acids and bases, a lightweight wafer structure for easy installation in tight spaces, and a reliable zero-leakage sealing mechanism with low operational friction.
The standard working temperature range for this concentric wafer valve is -20°C < T < 120°C, with optional seat materials accommodating temperatures up to +200°C depending on your specific media requirements.
Yes, the valve is designed with bidirectional sealing capabilities, ensuring zero leakage regardless of the medium flow direction across the pipeline.
It is ideal for chemical production lines (sulfuric acid, chlor-alkali), pharmaceutical clean systems (GMP compliant), and power plant flue gas desulfurization systems handling abrasive limestone slurry.
The valve complies with the EN593 standard with high-precision investment casting. Operation options include handle/lever control across nominal sizes ranging from 2" (DN50) to 40" (DN1000).
