Flange Welded Ball Valve
- Combined Structure, Flexible Installation: Utilizes flanges for pipeline connection, offering convenient installation and removal and better maintainability compared to pure welded ball valves.
- Welded Body, No External Leakage: The body itself is a fully welded unit, eliminating potential leak paths at traditional bonnet connections for enhanced safety and reliability.
- Superior Sealing Performance: Often employs carbon-fiber-reinforced PTFE seats and multiple stem seals to ensure bubble-tight sealing under various operating conditions.
- Robust and Durable: The valve possesses excellent overall rigidity, and the body material can match the pipeline, effectively resisting pipeline stress and geological deformation.
- Wide Applicability: Suitable for various media including natural gas, oil, heating supply, and chemicals, with different material configurations available for specific conditions.
The Flange Welded Ball Valve is a special type of ball valve that combines the convenience of flanged connections with the high integrity of a fully welded body. It features flanges at both ends for easy bolting, installation, and removal from a pipeline, while its core body is constructed using a fully welded process, creating a robust, unified structure with no external leak paths. This design ensures both superior sealing performance and structural strength to withstand demanding pressures and temperatures, while also offering flexibility in installation and maintenance. It is widely used in high-standard industrial applications such as city gas, district heating, and petrochemicals.
Basic Parameters
| Parameter | Value |
|---|---|
| Size | DN15-DN400 |
| Working Pressure | PN25-PN40 |
| Temperature Range | -40°C ~ 200°C |
Materials of Main Parts
| Part Name | Material (Q341F-16C/P, Q341F-25C/P) | Material (Q41F-16C/P, Q41F-25C/P) |
|---|---|---|
| Body | Cast Steel | Cast Steel |
| Ball | Cr-Ni-Ti Steel | Cr-Ni-Mo-Ti Steel |
| Stem | Cr-Ni-Ti Steel | Cr-Ni-Mo-Ti Steel |
| Seal Ring | Teflon | Teflon |
| Hand Wheel | Cast Steel | Cast Steel |
No drawing available.
