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Main Features:
1. Double eccentric design and forced sealing: Small opening and closing torque, small sealing pair abrasiveness extends valve service life.
2. Single-seat, full-bore design: No pressure loss when fully open; when closing, no medium retention in valve cavity. Stellite-alloy welded on the sealing pair has high hardness and high abrasiveness resistance.
3. Self-cleaning function.
4. Floating seat design: Floating valve seat can absorb thermal expansion.
5. Fixed valve ball design: Valve stem only bears rotary torque to ensure that the valve stem will not be stuck in extreme cases.
6. Range of working temperature: 0℃~425℃.
7. Medium: Clean water, sewage, sea water, acid and alkali liquids, slurry, steam, oil, containing granular medium.
8. Application: Petroleum and petrochemical, metallurgy, chemical industry, electric power, gas, water conservancy, municipal administration, and construction industries.
Technical Parameters:
| Pressure CL | Diameter | Dimensions (mm) | ||||||||
| DN | NPS | L | D | D1 | D2 | n-d | b | f | ||
| Flange | BW | |||||||||
| Class 900 PN150 | 50 | 2 | 368 | 368 | 216 | 165.1 | 92 | 8-Φ26 | 38.5 | 7 |
| 65 | 2.5 | 419 | 419 | 244 | 190.5 | 105 | 8-Φ29 | 41.5 | 7 | |
| 80 | 3 | 381 | 381 | 241 | 190.5 | 127 | 8-Φ26 | 38.5 | 7 | |
| 100 | 4 | 457 | 457 | 292 | 234.9 | 157 | 8-Φ32 | 44.5 | 7 | |
| 125 | 5 | 559 | 559 | 349 | 279.4 | 186 | 8-Φ35 | 51 | 7 | |
| 150 | 6 | 610 | 610 | 381 | 317.5 | 216 | 12-Φ32 | 56 | 7 | |
| 200 | 8 | 737 | 737 | 470 | 393.7 | 270 | 12-Φ39 | 63.5 | 7 | |
| 250 | 10 | 838 | 838 | 545 | 469.9 | 324 | 16-Φ39 | 70 | 7 | |
| 300 | 12 | 965 | 965 | 610 | 533.4 | 381 | 20-Φ39 | 79.5 | 7 | |
| 350 | 14 | 1029 | 1029 | 640 | 558.8 | 413 | 20-Φ42 | 86 | 7 | |
| 400 | 16 | 1130 | 1130 | 705 | 615.9 | 470 | 20-Φ45 | 89 | 7 | |
| 450 | 18 | 1219 | 1219 | 785 | 686 | 533 | 20-Φ51 | 102 | 7 | |
| 500 | 20 | 1321 | 1321 | 855 | 749.5 | 584 | 20-Φ55 | 108 | 7 | |
| 600 | 24 | 1549 | 1549 | 1040 | 901.5 | 692 | 20-Φ68 | 140 | 7 | |
| Pressure CL | Diameter | Dimensions (mm) | ||||||||
| DN | NPS | L | D | D1 | D2 | n-d | b | f | ||
| Flange | BW | |||||||||
| Class 1500 PN260 | 25 | 1 | 254 | 254 | 150 | 101.6 | 51 | 4-Φ26 | 28.5 | 7 |
| 40 | 1.5 | 305 | 305 | 180 | 123.6 | 73 | 4-Φ29 | 32 | 7 | |
| 50 | 2 | 368 | 368 | 215 | 165.1 | 92 | 8-Φ26 | 38.5 | 7 | |
| 65 | 2.5 | 419 | 419 | 245 | 190.5 | 105 | 8-Φ29 | 41.5 | 7 | |
| 80 | 3 | 470 | 470 | 265 | 203.2 | 127 | 8-Φ32 | 48 | 7 | |
| 100 | 4 | 546 | 546 | 310 | 241.3 | 157 | 8-Φ35 | 54 | 7 | |
| 125 | 5 | 673 | 673 | 375 | 292.1 | 186 | 8-Φ42 | 73.5 | 7 | |
| 150 | 6 | 705 | 705 | 394 | 317.5 | 216 | 12-Φ39 | 83 | 7 | |
| 200 | 8 | 832 | 832 | 483 | 393.7 | 270 | 12-Φ45 | 92 | 7 | |
| 250 | 10 | 991 | 991 | 585 | 482.6 | 324 | 12-Φ51 | 108 | 7 | |
| 300 | 12 | 1130 | 1130 | 675 | 571.5 | 381 | 16-Φ54 | 124 | 7 | |
| 350 | 14 | 1257 | 1257 | 750 | 635 | 413 | 16-Φ60 | 133.5 | 7 | |
| 400 | 16 | 1384 | 1384 | 825 | 705 | 470 | 16-Φ68 | 146.5 | 7 | |
| 450 | 18 | 1537 | 1537 | 915 | 774.5 | 533.5 | 16-Φ74 | 162 | 7 | |
| 500 | 20 | 1664 | 1664 | 985 | 832 | 584.5 | 16-Φ80 | 178 | 7 | |
