Flange Butterfly Valve Collection
- ANSI flange ends
- High-pressure rating
- Fire-safe API609
- Zero leakage
- Corrosion-resistant
- Eccentric disc design
- Low maintenance
- Manual/actuated options
- Wide temperature range
- Durable construction
Main functions and technical parameters of the product
MeiDe Valve producesFlange Butterfly Valve flange-type design ensures heavy-duty sealing with a raised face (RF) groove for ANSI 150-900LB pipelines. Key benefits:
- Bi-Directional Zero Leakage: Double-offset eccentric sealing achieves ISO 5208 Class VI (≤50ppm) at 196°C~600°
- Multi-Flange Adaptability: 8+ standards (ASME/DIN/BS) with vibration-resistant RF grooves.
- Quick Seat Replacement: Interchangeable PTFE/Inconel 625 seats in 20min, 5x lifespan vs welded types.
- API 609 Fire-Safe: Secondary metal seal activates post-800°C fire exposure.
- ISO 15848-1 Stem Packing: Live-loaded graphite ensures ≤50ppm emissions under 600LB pressure. Ideal for power plants, oil refineries, and chemical processing.
| Size Range | 2″-40″(50mm-1000mm) | Body Material | Carbon Steel,Stainless Steel，Nickel Aluminum Bronze,alloy steel,etc |
| Temperature Range | -196 to 600 degree | Stem Material | Staniless Steel |
| Pressure Ratings | Class 150 to Class 900,PN 2.5 to PN150,10K-20K | Body Style | Flange |
| Design Standard | ASME B16.34, Â API 609 | Flange Standard | ASME B16.5,
EN 1092,GOST 33259 |
| Testing Standard | API598,EN12266-1,
ISO 5208 |
Certifications | CE,EAC,SIL3,API 607,API 609,
ISO 19001 |
| Face to Face | API 609,ISO 5752,
MSSÂ SP-68, ASME B16.10,EN558-1 |
Fugitive Emissions | ISO 158484-1 |
| Operation | Wench,Worm Gear, Electric, Pneumatic,etc | Seat Material | soft seat ,metal seat,
full metal seat |
| Shutoff Rating | Zero Leakage | Disc Materials | Carbon Steel,Stainless Steel,
Nickel Aluminum Bronze,alloy steel,etc |