Analysis of Performance Characteristics of Fixed Ball Valve

Brief introduction of fixed <br> <br> fixed ball valve ball is a new generation of high performance, is suitable for long-distance pipelines and general industrial pipelines, strength, safety, resistance to harsh environments and the like for a special design consideration for For a variety of corrosive and non-corrosive media. Compared with the floating ball valve, when the valve is in operation, the force produced by the fluid pressure in front of the valve on the ball is transmitted to the bearing, and the ball does not move toward the valve seat, so the valve seat does not bear excessive pressure, so the fixed ball valve The small torque, small deformation of the valve seat, stable sealing performance, long service life, suitable for high pressure, large diameter occasions. Advanced spring pre-valve assembly with self-tightening features for upstream sealing. Each valve has two seats that seal in each direction, so there is no flow restriction for the installation.

Characteristics of the fixed ball valve 1. With a fixed ball design, the relative movement parts are made of self-lubricating materials with a very small coefficient of friction, and thus the operating torque is small. In addition, the long-term sealing of the sealed grease makes the operation more flexible.

2. The valve adopts a high platform structure and ISO5211 connection standard can make the installation of electric/pneumatic actuators more professional.

3, the use of full diameter or reduced diameter design, flow resistance is small.

4, metal hard seal O-type fixed ball valve uses two-way metal movable seal structure, with automatic compensation and self-cleaning function, superior sealing performance.

5, the use of fixed ball design, and increase the preload force spring, so that 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. Therefore, the flow direction of the medium does not need to be considered during installation.

7, with a fire anti-static structure, in the stem and valve body and between the stem and the ball set conductive springs to avoid ignition of static electricity to ignite flammable media. Ensure system security.

8. Double protection of the fireproof structure. When the fire damages the seal ring, each sealed part of the ball valve can form a metal-to-metal hard seal structure.

9, automatic pressure relief structure, when the liquid medium retained in the valve cavity due to temperature rise and gasification, so that the cavity pressure is abnormally high, the medium cavity can rely on its own thrust to push the valve seat and automatically pressure relief, Make sure the valve is safe.

10, optional pneumatic, electric, hydraulic, and pneumatic adjustment, electric adjustment type. For details, please refer to the book's actuator and regulator valve section.

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