CF8M Disc PTFE Seat Flanged Butterfly Valve
Basic Info of PTFE Seat Flanged Butterfly Valve
- Ductile iron: has high tensile strength, wear, and temperature resistance. It ensures long-lasting performance and corrosion resistance. so it it a best material for soft seat butterfly valve.
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CF8M is the cast stainless steel equivalent of 316 stainless steel.
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Chemical properties: CF8M performs well in weak acids, alkalis, saltwater, and chloride-containing media.
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Physical properties: great mechanical strength, service life and improved wear resistance.
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CF8M DIsc smooth surface finish reduces scaling, contamination, and media buildup.
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Pure PTFE seat is compatible with acids, alkalis, solvents and corrosive chemicals.It needs to be used with two halves body.
- The double flange design makes the soft seat butterfly valve easy to install. It suits various pipeline systems, including pipeline end systems.
Standards of Flanged Butterfly Valve
| 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 |
Material of Flanged Butterfly Valve
| Parts | Ductile Iron type | WCB type | Stainless Steel Type | Duplex Stainless Steel Type |
|---|---|---|---|---|
| Body | Cast Iron(GG25) Ductile Iron(GGG40/50) |
A216 A217 A105(forged) |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M |
2205 2507 1.4529 |
| Disc | Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529 |
2205 2507 1.4529 |
|
| Seat | NBR, EPDM, PTFE, Viton, Hypalon, Silicon, PFA | |||
| Stem | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel | Duplex Stainless Steel, Monel | ||
| Actuator | Hand Lever, Worm Gear, Electric, Pneumatic | |||
Paraments of Flanged Butterfly Valve
| DN | L | L1 | D | D1 | H | H1 | b | n-ød | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | PN1.0MPa | PN1.6MPa | PN1.0MPa | PN1.6MPa | ||||||
| 50 | 2″ | 108 | 180 | 125 | 125 | 150 | 326 | 83 | 20 | 4-ø18 | 4-ø18 |
| 65 | 2-1/2″ | 112 | 180 | 145 | 145 | 165 | 344 | 93 | 20 | 4-ø18 | 4-ø18 |
| 80 | 3″ | 114 | 180 | 160 | 160 | 200 | 363 | 100 | 22 | 4-ø18 | 8-ø18 |
| 100 | 4″ | 127 | 180 | 180 | 180 | 220 | 396 | 114 | 22 | 8-ø18 | 8-ø18 |
| 125 | 5″ | 140 | 180 | 210 | 210 | 250 | 421 | 125 | 24 | 8-ø18 | 8-ø18 |
| 150 | 6″ | 140 | 180 | 240 | 240 | 280 | 453 | 143 | 24 | 8-ø23 | 8-ø23 |
| 200 | 8″ | 152 | 270 | 295 | 295 | 335 | 578 | 170 | 26 | 8-ø23 | 12-ø23 |
| 250 | 10″ | 165 | 270 | 350 | 355 | 405 | 638 | 198 | 26 | 12-ø23 | 12-ø28 |
| 300 | 12″ | 178 | 380 | 400 | 410 | 455 | 731 | 223 | 32 | 12-ø23 | 12-ø28 |
| 350 | 14″ | 190 | 380 | 460 | 470 | 525 | 783 | 270 | 36 | 16-ø23 | 16-ø28 |
| 400 | 16″ | 216 | 450 | 515 | 525 | 580 | 888 | 300 | 38 | 16-ø28 | 16-ø31 |
| 450 | 18″ | 222 | 480 | 565 | 585 | 640 | 958 | 340 | 40 | 20-ø28 | 20-ø31 |
| 500 | 20″ | 229 | 480 | 620 | 650 | 705 | 1005 | 355 | 42 | 20-ø28 | 20-ø34 |
| 600 | 24″ | 267 | 480 | 725 | 770 | 825 | 1128 | 410 | 48 | 20-ø30 | 20-ø36 |
| 700 | 28″ | 292 | 640 | 840 | 840 | 920 | 1476 | 478 | 53 | 24-ø30 | 24-ø36 |
| 800 | 32″ | 318 | 640 | 950 | 950 | 1020 | 1533 | 525 | 58 | 24-ø33 | 24-ø39 |
| 900 | 36″ | 330 | 750 | 1050 | 1050 | 1120 | 1655 | 585 | 65 | 28-ø33 | 28-ø39 |
| 1000 | 40″ | 410 | 850 | 1160 | 1170 | 1340 | 1765 | 640 | 76 | 28-ø36 | 28-ø42 |
| 1200 | 48″ | 470 | 850 | 1380 | 1390 | 1560 | 1995 | 755 | 85 | 32-ø39 | 32-ø48 |
| 1400 | 56″ | 530 | 1000 | 1590 | 1590 | 1760 | 2310 | 910 | 103 | 36-ø42 | 36-ø48 |
| 1600 | 64″ | 600 | 1000 | 1820 | 1820 | 1970 | 2595 | 1030 | 123 | 40-ø48 | 40-ø56 |
| 1800 | 72″ | 697 | 1100 | 2020 | 2020 | 2180 | 2810 | 1140 | 135 | 44-ø48 | 44-ø56 |
| 2000 | 80″ | 760 | 1100 | 2230 | 2230 | 2345 | 3100 | 1250 | 145 | 48-ø48 | 48-ø56 |
Manufacture Process of Butterfly Valve
Certificates of Zfa Valve
WRAS
CE
ISO 9001
EAC Russia
