DN650 Welded Ball Valve
- Zero Leakage Design: Fully welded structure with no external leakage points and excellent sealing performance
- Extra-large Diameter Specification: DN650 diameter meeting extra-large flow requirements
- Maintenance-free Design: Integrated structure requiring no routine maintenance
- High Strength Structure: Suitable for high-pressure and high-stress conditions
- Flexible Operation: Flexible opening/closing with small operating torque
- Safe and Reliable: Strict quality control ensuring safe operation
DN650 Welded Ball Valve is an extra-large diameter fully welded ball valve with an integrated structure design, directly connected to the pipeline through welding with no external leakage points. The product is suitable for extra-large flow and high-pressure pipeline systems, widely used in critical applications such as natural gas long-distance transmission pipelines, large petrochemical installations, offshore engineering, etc., as the main equipment for cutting off or connecting media. The DN650 welded ball valve features zero leakage, maintenance-free operation, and corrosion resistance, capable of stable operation in various extreme environments. The product is manufactured using high-quality materials and precision machining to ensure excellent sealing performance and operational flexibility even under extra-large diameter conditions. The valve has a reasonable design with compact structure, making it an important component of modern extra-large diameter pipeline systems, especially suitable for critical applications with extremely high sealing and reliability requirements.
Technical Standards
| Item | Technical Standard |
|---|---|
| Nominal Diameter | DN650 (26") |
| Nominal Pressure | 150Lb-600Lb |
| Operating Temperature | -29℃ to +200℃ |
| Applicable Media | Natural gas, crude oil, refined oil, chemical media, etc. |
| Body Material | A216 WCB, A352 LCB, A182 F304 |
| Ball Material | A182 F316, A182 F316L, A182 F327 |
| Seal Material | Metal hard seal, Graphite seal |
| Connection Type | Fully Welded Connection |
| Operation Method | Worm Gear, Pneumatic, Electric |
| Design Standard | ASME B16.34, API 6D, GB/T 12237 |
Basic Models
| Model | Type | Features |
|---|---|---|
| FWBV-650-150 | 150Lb DN650 Welded Ball Valve | Ultra-low pressure extra-large flow, cost-effective |
| FWBV-650-300 | 300Lb DN650 Welded Ball Valve | Medium pressure application, stable performance |
| FWBV-650-600 | 600Lb DN650 Welded Ball Valve | High pressure application, high strength |
| FWBV-650-900 | 900Lb DN650 Welded Ball Valve | Ultra-high pressure application, safe and reliable |
Main Components Material Table
| No. | Part Name | Material |
|---|---|---|
| 1 | Valve Body | A216 WCB, A352 LCB, A182 F304 |
| 2 | Ball | A182 F316, A182 F316L, A182 F327 |
| 3 | Valve Stem | 440C, 17-4PH, A182 F22 |
| 4 | Sealing Ring | Metal seal, Flexible Graphite |
| 5 | Packing | Flexible Graphite, Graphite Braided Packing |
| 6 | Actuator | Cast Steel, Cast Iron |
| 7 | Fasteners | A193 B7, A193 B8M, A320 L7 |
| 8 | Fire-safe Design | Fire-resistant Asbestos, Metal Seal Ring |
No drawing available.
