| Valve Type: | Wafer butterfly valve | Structure: | Concentric |
| Standard: | EN593 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handle/Lever |
Wafer type connection with minimal space occupation. The valve body does not have an independent flange and is directly clamped between two pipeline flanges using double headed bolts. Its axial length is only 1/2~1/3 of that of a flange butterfly valve, and its radial size is compact, reducing weight by 30%~60%. It is particularly suitable for narrow installation environments such as dense pipelines, equipment rooms, and underground pipelines, while reducing labor/equipment costs for handling and installation.
The sealing surface is made of elastic materials such as Nitrile Rubber (NBR), Ethylene Propylene Diene Monomer (EPDM), and Fluororubber (FKM). It is suitable for room temperature and clean media including water, air, natural gas, and weakly corrosive fluids, typically ranging from -20℃ to 120℃. Leakage level reaches ANSI B16.104 Class VI (bubble level seal).



| Body | Plate | Shaft | Bushing | Seat | Temp Range (℃) |
|---|---|---|---|---|---|
| Ductile Iron | Ductile Iron | Stainless Steel | PTFE | EPDM | -45 ~ +135 |
| Ductile Iron | Stainless Steel | Carbon Steel | PTFE | Hypalon | -18 ~ +135 |
| Aluminum Bronze | Titanium Steel | Stainless Steel | PTFE | EPDM | -45 ~ +135 |
| Stainless Steel | CF8M | Stainless Steel | PTFE | Neoprene | -7 ~ +93 |
| CF8M | Carbon Steel | Stainless Steel | PTFE | NBR | -12 ~ +82 |
| Carbon Steel | CF8M | Stainless Steel | PTFE | Abrasion-Resistant | -10 ~ +50 |
| DN (mm) | DN (inch) | A | B | C | D | L | H | D1 | n-Φ |
|---|---|---|---|---|---|---|---|---|---|
| 50 | 2" | 161 | 80 | 42 | 52.9 | 32 | 84.84 | 120 | 4-Φ23 |
| 80 | 3" | 181 | 95 | 45.2 | 78.8 | 32 | 61.23 | 160 | 8-Φ18 |
| 100 | 4" | 200 | 114 | 52.1 | 104 | 32 | 70.80 | 185 | 4-Φ24.5 |
| 150 | 6" | 226 | 139 | 55.8 | 155.6 | 32 | 91.08 | 238 | 4-Φ25 |
| 200 | 8" | 260 | 175 | 60.6 | 202.5 | 45 | 112.89 | 295 | 4-Φ25 |
| 300 | 12" | 337 | 242 | 76.9 | 301.6 | 45 | 105.34 | 407 | 4-Φ29 |