3 Inch Flanged Ball Valve Class150 ISO5211 Actuator Mount High Pressure Shock Resistant
DN80 3 inch flanged ball valve, Class150 flange, strong pressure & shock resistance, ISO5211 pad for electric/pneumatic actuator, for power & chemical pipelines.
Description
This DN80 (3″) flanged ball valve serves as a critical shutoff device in industrial pipelines for power plants, petrochemical facilities, gas networks, and chemical processing. Its integral flange construction ensures reliable sealing under high‑pressure and vibration‑prone conditions. An ISO5211 mounting pad is provided as standard, allowing direct attachment of various actuators for integration into centralized remote control systems.
Core Specifications
| Parameter | Detail |
|---|---|
| Nominal size | DN80 / 3 Inch |
| Connection | Flanged |
| Pressure rating | Class150 / PN16 / PN25 |
| Body material | Carbon Steel / 304 / 316 Stainless Steel |
| Flow path | Full Port |
| Actuator base | ISO5211 standard mounting flange |
| Temperature range | –29°C ~ 180°C |
| Seal material | PTFE / Metal Seat (optional) |
Material & Structural Features
The valve adopts a 3pc flanged ball valve configuration with a forged, thickened body. The bolted flange joints provide robust pressure resistance and damping against mechanical vibration, ensuring that leakage and distortion are minimised even under frequent pump starts, flow surges, or continuous equipment oscillation. An ISO5211 top flange is pre‑machined on the bonnet, enabling straightforward retrofitting with electric ball valve or pneumatic ball valve actuators—allowing seamless changeover between manual and automated operation. For corrosive chemical media, the body can be specified in 316 stainless steel.
Typical Applications
This valve is widely used in thermal power plant cooling water loops, petrochemical feed lines, city gas mains, and metallurgical cooling systems. For instance, at the Huaneng Thermal Power Co. project in Shandong, the entire cooling water main network adopted the 3‑inch flanged ball valve. Despite prolonged vibration from generating units, the flanged body maintained stable sealing integrity. Electric actuators were uniformly added to enable remote on/off control from the central control room, greatly reducing onsite manual intervention.
Key Advantages
Compared with threaded‑end ball valves, the flanged design offers superior rigidity and enhanced resistance to both pressure surges and vibration. The 3‑piece split body construction facilitates maintenance—allowing access to the ball and seats without cutting the pipeline. The full‑port passage ensures minimal pressure drop and high flow efficiency, making the valve suitable for a broad range of services, from civil gas distribution to heavy‑duty high‑temperature and high‑pressure industrial applications.
