- Fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines.
- Working principle of flange fixed ball valve: The ball of the fixed ball valve is fixed and supported by two fixed shafts connected to the ball. When closed, the ball will not move under the action of the medium pressure. Usually, rolling bearings or sliding bearings are installed on the upper and lower shafts connected to the ball. To reduce the friction of the shaft neck during opening and closing. Reduce the operating torque. This fixed ball valve is suitable for large-diameter ball valves.
- Flange fixed ball valve product features:
1. Adopting fixed ball design, the relative moving parts are all made of self-lubricating materials with extremely small friction coefficient, so the operating torque is small. In addition, the long-term sealing of the sealing grease makes the operation more flexible.
2. The valve adopts a high platform structure and ISO5211 connection standard, which can make the installation of electric/pneumatic actuators more professional.
3. Adopting full-bore or reduced-bore design, the flow resistance is small.
4. The metal hard seal O-type fixed ball valve adopts a two-way metal movable seal structure, which has automatic compensation and self-cleaning functions and excellent sealing performance.
5. Adopting a fixed ball design and adding a preload spring, the ball valve has an automatic pressure relief function.
6. Each ball valve has two movable sealing seats, which can be sealed in both directions, so the flow direction of the medium does not need to be considered during installation.
7. It has a fireproof and anti-static structure. Conductive springs are set between the valve stem and the valve body and between the valve stem and the ball to prevent static electricity from igniting flammable media. Ensure system safety.
8. Double protection of fire-resistant structure. In case of fire and the sealing ring is burned, each sealing part of the ball valve can form a metal-to-metal hard sealing structure.
9. Automatic pressure relief structure. When the liquid medium retained in the middle cavity of the valve is vaporized due to the increase in temperature, and the pressure in the middle cavity increases abnormally, the middle cavity medium can rely on its own thrust to push the valve seat and automatically release the pressure, thereby ensuring the safety of the valve.
10. Pneumatic, electric, hydraulic, pneumatic adjustment type and electric adjustment type are optional.