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Wholesale PTFE seat U section butterfly valve concentric short series Manufacturers, Factory
Product Description
Valve Type
Concentric butterfly valve
Structure
Concentric
Standard
EN / DIN / API
Workmanship
Investment casting
Sealing Direction
Bidirectional
Sealing Grade
Zero leakage
Temperature
-20°C < T < 120°C
Operation
Handle / Lever
Characteristics
This U-type flange butterfly valve adopts an integral U-body for superior rigidity. End flanges secure stable piping connection and vibration resistance. Its compact dimension cuts down installation space. The 90° rotary action ensures easy operation and quick switching, while the simple structure allows convenient assembly and regular upkeep. The short structure of bf U type saves installation space, reduces pipeline load, fits compact piping layouts and cuts overall costs.
Advantages
1. Sealing Performance
U-type bfv with PTFE seat has an extremely low friction coefficient and good conformability, achieving zero leakage; it is resistant to aging, has a long sealing life, and operates smoothly with low risk of jamming.
2. Resistance to Media
It is resistant to various corrosive media such as strong acids, strong alkalis, organic solvents, and oils, exhibiting strong chemical stability.
3. Temperature Range
Normal operating temperature: -20℃ ~ 180℃, not suitable for high-temperature steam.
4. Structural Advantages
The U type flange butterfly valve features a short structure, light weight, secure flange connection, space-saving installation, and good seismic resistance.
Packing
Standard export wooden case packaging
Application Scenarios
This PTFE short structural is used for pipelines carrying corrosive media. Common applications include chemical plants, sewage treatment projects, pharmaceutical and food factories. It is also suitable for oil, gas and industrial cooling water systems.
Material Specifications
| Body | Disc | Stem | Bushing | Seat | ||||
|---|---|---|---|---|---|---|---|---|
| Name | Code | Name | Code | Name | Name | Name | Code | Working temp (℃) |
| Cast iron | Z | Plated ductile iron | B1 | Stainless steel Carbon steel |
Lubrized bronze PTFE |
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 Details
| Specification | A | B | C | ΦD | ΦE | ΦG | f | H | J | ΦK | L | n-Φ1 | Φ2 | α | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | ||||||||||||||
| 100 | 4 | 200 | 114 | 52.07 | 104 | 70 | 13 | 55 | 25.97 | 90.03 | 90 | 28 | 4-10 | 15.77 | 45 |
| 125 | 5 | 213 | 127 | 55.5 | 123.3 | 70 | 13 | 55 | 33.9 | 110.1 | 90 | 28 | 4-10 | 18.92 | 45 |
| 150 | 6 | 226 | 139 | 55.75 | 155.6 | 70 | 13 | 55 | 49.93 | 145.27 | 90 | 28 | 4-10 | 18.92 | 45 |
| 200 | 8 | 260 | 175 | 60.58 | 202.5 | 102 | 13 | 70 | 70.96 | 193.23 | 125 | 45 | 4-12 | 22.1 | 45 |
| 250 | 10 | 292 | 203 | 68 | 250.5 | 102 | 13 | 70 | 91.25 | 241 | 125 | 45 | 4-12 | 28.45 | 45 |
| 300 | 12 | 337 | 242 | 76.9 | 301.6 | 102 | 20 | 70 | 112.35 | 291.63 | 125 | 45 | 4-12 | 31.6 | 45 |
| 350 | 14 | 368 | 267 | 76.17 | 333.3 | 125 | 20 | 85 | 128.57 | 324.48 | 150 | 45 | 4-14 | 31.6 | 45 |
| 400 | 16 | 400 | 309 | 85.7 | 389.6 | 140 | 20 | 100 | 151.95 | 380 | 175 | 51 | 4-18 | 33.15 | 45 |
| 450 | 18 | 422 | 328 | 104.6 | 440.51 | 140 | 20 | 100 | 167.96 | 427.91 | 175 | 51 | 4-18 | 38 | 45 |
| 500 | 20 | 480 | 361 | 130.28 | 491.6 | 140 | 20 | 100 | 180.66 | 474 | 175 | 57 | 4-18 | 41.15 | 45 |
| 600 | 24 | 562 | 459 | 151.36 | 592.5 | 165 | 22 | 130 | 220.57 | 572.84 | 210 | 72 | 4-22 | 50.65 | 45 |
| 700 | 28 | 624 | 520 | 163 | 695 | 254 | 30 | 200 | 266 | 675.62 | 300 | 82 | 8-18 | 63.35 | 22.5 |
| 800 | 32 | 672 | 591 | 188 | 794.7 | 254 | 30 | 200 | 303.35 | 772.14 | 300 | 82 | 8-18 | 63.35 | 22.5 |
| 900 | 36 | 720 | 656 | 203 | 864.7 | 254 | 30 | 200 | 330.85 | 840.53 | 300 | 110 | 8-18 | 75 | 22.5 |
| 1000 | 40 | 800 | 721 | 216 | 965 | 254 | 30 | 200 | 374.5 | 940.52 | 300 | 142 | 8-18 | 85 | 22.5 |
| 1200 | 48 | 940 | 864 | 254 | 1160 | 298 | 34 | 230 | 453 | 1131 | 350 | 150 | 8-22 | 105 | 22.5 |
Frequently Asked Questions (FAQ)
What standards and structure does this U-type butterfly valve follow?
This valve features a concentric structure with an integral U-body for enhanced rigidity and flange connections. It complies with EN, DIN, and API standards, manufactured using precision investment casting.
What are the key sealing performance advantages of the PTFE seat?
The PTFE seat offers an extremely low friction coefficient and superior conformability to achieve zero leakage. It is highly resistant to aging, ensures a long service life, and provides smooth operation with a low risk of jamming.
What media types and operating temperatures is this valve suitable for?
It exhibits excellent chemical stability against corrosive media such as strong acids, strong alkalis, organic solvents, and oils. The standard working temperature range is -20°C to 180°C (Note: it is not suitable for high-temperature steam).
In which applications is the U-type flange butterfly valve typically used?
It is widely applied in chemical plants, sewage treatment projects, pharmaceutical and food production facilities, as well as oil, gas, and industrial cooling water pipelines handling corrosive fluids.
What operation methods and packaging options are provided?
The valve is designed for quick 90° rotary switching operated via Handle or Lever. For transportation, it is packed using standard export wooden cases to guarantee safe delivery.
How does the short U-type structure save installation costs?
The compact, short structure reduces overall weight and pipeline load while saving installation space, making it ideal for tight piping layouts and cutting total system costs.
