| No. | Parts | Materials |
| 1 | Body | Cast iron, Ductile iron, Carbon steel, Stainless steel |
| 2 | Disc | Ductil iron+Nickel plated, Stainless steel, Aluminium bronze |
| 3 | Stem | Stainless steel |
| 4 | Bushing | PTFE, Lubricated bronze |
| 5 | Seat | EPDM, NBR, Neoprene, Viton, PTFE |
| 6 | Pin | Stainless steel |
| 7 | O-ring | EPDM, NBR |
1. Simple structure, small external size, short structure length, small volume, light weight, suitable for large diameter valves.
2. When fully open, the effective flow area of the seat channel is large and the fluid resistance is small.
3. Convenient opening and closing, fast, good adjustment performance.
4. The opening and closing moment is small, because the butterfly plate on both sides of the rotating shaft is basically equal to the action of the medium, and the direction of the torque is opposite, so the opening and closing is less effort.
5. Sealing surface materials are generally rubber and plastic, so the low-pressure sealing performance is good.
| Size | H1 | H2 | H3 | φA | φB | L | φ | PN10 | PN16 | 150LB | JIS10K | |||||
| DN | IN | PCD | n-φd | PCD | n-φd | PCD | n-φd | PCD | n-φd | |||||||
| DN40 | 1.5" | 65 | 128 | 32 | 110 | 95 | 33 | 12.7 | 110 | 4-φ18 | 110 | 4-φ18 | 98.5 | 4-φ16 | 105 | 4-φ19 |
| DN50 | 2" | 75 | 129 | 32 | 125 | 105 | 43 | 12.7 | 125 | 4-φ18 | 125 | 4-φ18 | 120.6 | 4-φ19 | 120 | 4-φ19 |
| DN65 | 2.5" | 82 | 136 | 32 | 145 | 127 | 46 | 12.7 | 145 | 4-φ18 | 145 | 4-φ18 | 139.7 | 4-φ19 | 140 | 4-φ19 |
| DN80 | 3" | 99 | 153 | 32 | 160 | 145 | 46 | 12.7 | 160 | 8-φ18 | 160 | 8-φ18 | 152.4 | 4-φ19 | 150 | 8-φ19 |
| DN100 | 4" | 110 | 167 | 32 | 190.5 | 165 | 52 | 15.8 | 180 | 8-φ18 | 180 | 8-φ18 | 190.5 | 8-φ19 | 175 | 8-φ19 |
| DN125 | 5" | 125 | 193 | 32 | 216 | 200 | 56 | 18.9 | 210 | 8-φ18 | 210 | 8-φ18 | 215.9 | 8-φ22.4 | 210 | 8-φ23 |
| DN150 | 6" | 145 | 209 | 32 | 241.3 | 225 | 56 | 18.9 | 240 | 8-φ22 | 240 | 8-φ22 | 241.3 | 8-φ22.4 | 240 | 8-φ23 |
| DN200 | 8" | 170 | 251 | 40 | 298.4 | 280 | 60 | 22.2 | 295 | 8-φ22 | 295 | 12-φ22 | 298.4 | 8-φ22.4 | 290 | 12-φ23 |
| DN250 | 10" | 210 | 280 | 45 | 361.9 | 350 | 68 | 28.6 | 350 | 12-φ22 | 355 | 12-φ26 | 361.9 | 12-φ25.4 | 355 | 12-φ25 |
| DN300 | 12" | 240 | 315 | 45 | 431.8 | 400 | 78 | 31.6 | 400 | 12-φ22 | 410 | 12-φ26 | 431.8 | 12--φ25.4 | 400 | 16-φ25 |
| DN350 | 14" | 260 | 348 | 45 | 476.2 | 445 | 78 | 31.6 | 460 | 16-φ22 | 470 | 16-φ26 | 476.2 | 12-φ28.4 | 445 | 16-φ25 |
| DN400 | 16" | 295.5 | 392.5 | 52 | 540 | 510 | 102 | 33 | 515 | 16-φ26 | 525 | 16-φ30 | 539.7 | 16-φ28.4 | 510 | 16-φ27 |
| DN450 | 18" | 322.5 | 401.5 | 52 | 585 | 565 | 114 | 38 | 565 | 20-φ26 | 585 | 20-φ30 | 577.8 | 16-φ31.8 | 565 | 20-φ27 |
| DN500 | 20" | 362.5 | 451.5 | 64 | 650 | 620 | 127 | 41 | 620 | 20-φ26 | 650 | 20-φ33 | 635 | 20-φ31.8 | 620 | 20-φ27 |
| DN600 | 24" | 428.5 | 541.5 | 70 | 770 | 725 | 154 | 50.5 | 725 | 20-φ30 | 770 | 20-φ36 | 749.3 | 20-φ35.1 | 730 | 24-φ33 |
Design and manufacture: EN593, API609
1.Face to face dimension: EN 558-1 Series 20, API 609
2.Flange end: EN1092-2 PN10/16, ANSI B16.1, BS10 Table D/E
3.Top flange: ISO5211
4.Size range: DN40 - DN600
5.Max. working pressure: 1.0/1.6 Mpa
6.Inspection test: EN12266
7.WWorking temperature: EPDM ≤ 120°C, NBR ≤ 80°C
8.Suitable medium: water, oil and gas
9.Operator: Lever, gearbox, electric or pneumatic actuator.
