Its structural feature is that the valve rod axis is not only deviated from the center of the butterfly plate, but also deviated from the center of the body. The effect of double eccentricity makes the butterfly plate quickly break away from the valve seat after the valve is opened, greatly eliminating the unnecessary over-extrusion and scraping between the butterfly plate and the valve seat, reducing the opening resistance distance, reducing wear, and improving the service life of the valve seat. Compared with the center line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, has longer service life and good stability.
Body Material: Ductile Iron GGG50
Disc Material: Ductile Iron GGG50
Stem Material: Stainless Steel SS420
Disc seat : EPDM
Disc seat ring: SS304
Drive: Handwheel, Gearbox, Pneumatic actuator, Electric actuator
End Connection: Flange
1. Reasonable design, compact structure, easy assembly and disassembly, easy maintenance.
2. Eccentric structure is adopted to reduce the friction of the sealing ring and prolong the service life of the valve.
3 Completely sealed, with zero leakage. Can be used in ultra-high vacuum conditions.
4. Replace the valve plate seal ring, butterfly plate, rotating shaft and other materials, which can be applied to various media and different temperatures.
| SIZE | PN10 | PN16 | ||||
| DN | INCH | L | D2 | n-d | D2 | n-d |
| 100 | 4" | 127 | 180 | 8-φ19 | 180 | 8-φ19 |
| 125 | 5" | 140 | 210 | 8-φ19 | 210 | 8-φ19 |
| 150 | 6" | 140 | 240 | 8-φ22 | 240 | 8-φ22 |
| 200 | 8" | 152 | 295 | 8-φ22 | 295 | 12-φ22 |
| 250 | 10" | 165 | 350 | 12-φ22 | 355 | 12-φ28 |
| 300 | 12" | 178 | 400 | 12-φ22 | 410 | 12-φ28 |
| 350 | 14" | 190 | 460 | 16-φ22 | 470 | 16-φ28 |
| 400 | 16" | 216 | 515 | 16-φ28 | 525 | 16-φ31 |
| 450 | 18" | 222 | 565 | 20-φ28 | 585 | 20-φ31 |
| 500 | 20" | 229 | 620 | 20-φ28 | 650 | 20-φ34 |
| 600 | 24" | 267 | 725 | 20-φ31 | 770 | 20-φ37 |
| 700 | 28" | 292 | 840 | 24-φ31 | 840 | 24-φ37 |
| 800 | 32" | 318 | 950 | 24-φ34 | 950 | 24-φ40 |
| 900 | 36" | 330 | 1050 | 28-φ34 | 1050 | 28-φ40 |
| 1000 | 40" | 410 | 1160 | 28-φ37 | 1170 | 28-φ43 |
1.Design and manufacture according to GB/T 12238.
2. Face to face according to GB/T 12221.
3. Flange drilling according to GB/T 17241.6.
4.Pressure test according to GB/T 13927.
