Features of CF8 Butterfly Valve
- 3 butterfly valve refers to 3inch DN80 nominal diameter butterfly valve.
- The material selection of stainless steel CF8 body wafer 3 butterfly valve in accordance with relevant standards, for excellent corrosion resistance and durability.
- Standard structure, Thick casting, Quick and light opening and closing, convenient maintenance.
- EPDM (Ethylene Propylene Diene Monomer) ensures a tight, leak-free seal, excellent flexibility, and resistance to water, steam, and mild chemicals.
- Replaceable Seat: Allows for easy maintenance and cost-effective replacement without changing the entire valve.
- Bi-directional sealing of CF8 body wafer 3 butterfly valve provides effective shutoff in both flow directions.
- EPDM seat reduces friction for smooth valve actuation.
Parameters of CF8 Body Wafer Butterfly Valve
| SIZE | φK | 4-φd | φD | φD1 | L | L1 | H | H1 | H2 | φ2 | φ3 | 4-φdl | T*T | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN6 | PN10 | PN16 | CL150 | PN6 | PN10 | PN16 | CL150 | |||||||||||||
| DN50 | 2″ | 110 | 125 | 120.6 | 4-φ14 | 4-φ19 | 4-φ19 | 82 | 53.08 | 42.5 | 46.1 | 30 | 140 | 60 | 70 | 90 | 10 | 11 | ||
| DN65 | 2.5 | 130 | 145 | 139.7 | 4-φ14 | 4-φ19 | 4-φ19 | 94 | 64.82 | 45.6 | 49 | 30 | 150 | 67 | 70 | 90 | 10 | 11 | ||
| DN80 | 3″ | 150 | 160 | 152.4 | 4-φ19 | 8-φ19 | 4-φ19 | 111.2 | 79.04 | 45.6 | 48.4 | 30 | 160 | 87 | 70 | 90 | 10 | 11 | ||
| DN100 | 4″ | 170 | 180 | 190.5 | 4-φ19 | 8-φ19 | 8-φ19 | 140 | 104.04 | 52 | 56 | 30 | 180 | 105 | 70 | 90 | 10 | 11 | ||
| DN125 | 5′ | 200 | 210 | 215.9 | 8-φ19 | 8-φ19 | 8-φ22.4 | 166 | 123.3 | 56 | 60 | 30 | 190 | 118 | 70 | 90 | 10 | 14 | ||
| DN150 | 6″ | 225 | 240 | 241.3 | 8-φ19 | 8-φ23 | 8-φ22.4 | 187 | 155.68 | 56 | 60 | 30 | 210 | 130 | 70 | 90 | 10 | 14 | ||
| DN200 | 8″ | 280 | 295 | 298.4 | 8-φ19 | 8-φ23 | 12-φ23 | 8-φ22.4 | 246.8 | 201.9 | 60 | 64 | 35 | 235 | 166 | 102 | 125 | 12 | 17 | |
| DN250 | 10° | 335 | 350 | 355 | 361.9 | 12-φ19 | 12-φ23 | 12-φ28 | 12-φ25.4 | 301.5 | 250.45 | 68 | 72 | 35 | 270 | 197 | 102 | 125 | 12 | 22 |
| DN300 | 12′ | 395 | 400 | 410 | 431.8 | 12-φ23 | 12-φ23 | 12-φ28 | 12-φ25.4 | 352 | 301.55 | 78 | 83 | 35 | 305 | 231 | 102 | 125 | 12 | 22 |
| SIZE | φK | 4-φd | φD | φD1 | L | L1 | H | H1 | H2 | φ2 | φ3 | 4-φdl | T*T | H3 | F | φV | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN6 | PN10 | PN16 | CL150 | PN6 | PN10 | PN16 | CL150 | ||||||||||||||||
| DN50 | 2′ | 110 | 125 | 120.6 | 4-φ14 | 4-φ19 | 4-φ19 | 82 | 53.08 | 42.5 | 46.1 | 30 | 140 | 60 | 70 | 90 | 10 | 11 | 65 | 207 | 146 | ||
| DN65 | 2.5′ | 130 | 145 | 139.7 | 4-φ14 | 4-φ19 | 4-φ19 | 94 | 64.82 | 45.6 | 49 | 30 | 150 | 67 | 70 | 90 | 10 | 11 | 65 | 207 | 146 | ||
| DN80 | 3″ | 150 | 160 | 152.4 | 4-φ19 | 8-φ19 | 4-φ19 | 111.2 | 79.04 | 45.6 | 48.4 | 30 | 160 | 87 | 70 | 90 | 10 | 11 | 65 | 207 | 146 | ||
| DN100 | 4′ | 170 | 180 | 190.5 | 4-φ19 | 8-φ19 | 8-φ19 | 140 | 104.04 | 52 | 56 | 30 | 180 | 105 | 70 | 90 | 10 | 11 | 65 | 207 | 146 | ||
| DN125 | 5′ | 200 | 210 | 215.9 | 8-φ19 | 8-φ19 | 8-φ22.4 | 166 | 123.3 | 56 | 60 | 30 | 190 | 118 | 70 | 90 | 10 | 14 | 65 | 207 | 146 | ||
| DN150 | 6″ | 225 | 240 | 241.3 | 8-φ19 | 8-φ23 | 8-φ22.4 | 187 | 155.68 | 56 | 60 | 30 | 210 | 130 | 70 | 90 | 10 | 14 | 65 | 207 | 146 | ||
| DN200 | 8′ | 280 | 295 | 298.4 | 8-φ19 | 8-φ23 | 12-φ23 | 8-φ22.4 | 246.8 | 201.9 | 60 | 64 | 35 | 235 | 166 | 102 | 125 | 12 | 17 | 78.5 | 296 | 295 | |
| DN250 | 10° | 335 | 350 | 355 | 361.9 | 12-φ19 | 12-φ23 | 12-φ28 | 12-φ28.4 | 301.5 | 250.45 | 68 | 72 | 35 | 270 | 197 | 102 | 125 | 12 | 22 | 78.5 | 296 | 295 |
| DN300 | 12° | 395 | 400 | 410 | 431.8 | 12-φ23 | 12-φ23 | 12-φ28 | 12-φ28.4 | 352 | 301.55 | 78 | 83 | 35 | 305 | 231 | 102 | 125 | 12 | 22 | 80 | 304 | 295 |
| DN350 | 14′ | 445 | 460 | 470 | 476.2 | 12-φ23 | 16-φ23 | 16-φ28 | 12-φ28.4 | 390 | 333.8 | 78 | 83 | 35 | 360 | 255 | 125 | 150 | 14 | 22 | 80 | 304 | 295 |
| SIZE | φK | 4-φd | φD | φD1 | L | L1 | H | H1 | H2 | φ2 | 03 | 4-φdl | T*T | H3 | W1 | W2 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN6 | PN10 | PN16 | CL150 | PN6 | PN10 | PN16 | CL150 | ||||||||||||||||
| DN400 | 16″ | 495 | 515 | 525 | 539.7 | 16-φ23 | 16-φ28 | 16-φ31 | 16-φ28.4 | 452 | 389 | 102 | 106 | 50 | 381 | 293 | 140 | 175 | 18 | 27 | 252 | 120 | 251 |
| DN450 | 18″ | 550 | 565 | 585 | 577.8 | 16-φ23 | 20-φ28 | 20-φ31 | 16-φ31.8 | 510 | 439.2 | 114 | 118 | 50 | 425 | 325 | 140 | 175 | 18 | 27 | 252 | 120 | 251 |
| DN500 | 20″ | 600 | 620 | 650 | 635 | 20-φ23 | 20-φ28 | 20-φ34 | 20-φ31.8 | 564 | 491.4 | 127 | 132 | 50 | 470 | 363 | 140 | 175 | 18 | 36 | 252 | 120 | 251 |
| DN600 | 24″ | 705 | 725 | 770 | 749.3 | 20-φ28 | 20-φ31 | 20-φ37 | 20-φ35.1 | 651 | 579 | 153 | 159 | 60 | 565 | 425 | 165 | 210 | 22 | 36 | 320 | 140 | 298 |
CF8 Wafer 3 Butterfly Valve Manufacture Process
Application of Wras EPDM SS Butterfly Valve
- Water Treatment and Municipal Water Supply: Suitable for municipal water distribution plants, raw water intake points, and wastewater treatment systems—particularly in environments requiring high resistance to chlorine and chloramines.
- Food, Beverage, and Pharmaceutical Utilities: Featuring WRAS-approved EPDM seats and stainless steel discs, these valves are ideal for various auxiliary utility lines (such as cooling water, CIP (Clean-in-Place) circulation systems, and HVAC chilled water piping). Additionally, the stainless steel valve body helps prevent contamination caused by rust or corrosion.
- Chemical and Process Industries: Suitable for handling weak acids, weak bases, cooling tower water, and various industrial process fluids (provided the media is chemically compatible with EPDM rubber and CF8 stainless steel).
- HVAC and Building Facilities: Well-suited for chilled/hot water circulation systems in commercial buildings, fire protection systems, and large-diameter piping networks, offering reliable bi-directional shut-off capabilities at a PN16 pressure rating.
CF8 Wafer 3 Butterfly Valve Certificates
WRAS
CE
ISO 9001
EAC Russia
FAQ of CF8 Body Epdm Seat Wafer Butterfly Valve
Although the valve body does not come into direct contact with the process medium, it is exposed to the external installation environment. Even if the seat isolates the medium from most of the valve body’s interior, external factors—such as condensation, humidity, or occasional exposure to moisture—still influence the choice of valve body material.
A CF8 valve body is advantageous in environments where maintenance (such as repainting) of a ductile iron body would be difficult. If the environment involves salt spray or corrosive cleaning chemicals, a specific material assessment is required.
First, check whether the valve is centered, the flanges are properly aligned, and the specified bolt-tightening procedure has been followed.
If the operating torque increases after the flanges are tightened, it may be due to uneven pressure on the seat, poor flange alignment, or interference between the valve disc and the inner diameter of the adjacent piping. Do not force the handle, as this could damage the seat or the actuation components. Before considering an upgrade to a larger actuator, please verify the factors mentioned above.
Not necessarily. Even if the nominal diameter is the same, seats may differ in their external profile, the design of their retention grooves, the width of the flange sealing surface, the geometry of the stem bore, and the hardness of the rubber. These variations can affect how the seat is secured, the required operating torque, and the sealing performance. When ordering replacements, always ensure you select parts based on the original valve model or approved seat drawings.
