CBXDF Series Double Eccentric Semi-Ball Valve

Product Overview

The double eccentric semi-ball valve utilizes the principle of eccentric wedging, achieving sealing, regulation, and closure through its transmission mechanism. It employs an eccentric valve body, eccentric ball, and seat. When the valve stem rotates, it automatically centers along a common trajectory, tightening progressively during closure to achieve excellent sealing. The ball and seat of the semi-ball valve completely separate, eliminating wear on the sealing ring and overcoming the issue of constant wear between the traditional ball and seat sealing surfaces. Non-metallic elastic materials are embedded into the metal seat, providing good protection for the metal surface of the seat. The double eccentric semi-ball valve offers a reliable control solution for processes in industries such as chemical, petrochemical, gas, metallurgy, and power, where sedimentation, scaling, or crystallization often impede flow.

Product Features

1. When open, the ball retracts into the valve cavity, providing a large flow area without沖刷 or obstruction. During closure, the valve core is not沖刷, and the spherical surface of the core progressively engages with the seat,具備剪切功能 to effectively清除結(jié)垢障礙, ensuring reliable sealing. It is particularly effective for transporting media prone to scaling and solid precipitation.

2. The semi-ball of the double eccentric ball valve uses a bimetallic design, with different alloys welded onto the ball, and the seat correspondingly welded and specially treated. The sealing surfaces can be configured for corrosion resistance, wear resistance, high temperature resistance, and other types to meet various application needs.

3. The double eccentric ball valve provides tight sealing, capable of achieving zero leakage for hazardous gases.

4. The seat and ball have a compensation allowance; when the seat wears, slight additional rotation during closure can still ensure reliable sealing, extending service life. Additionally, users can remove the tightening screw for adjustment or replacement, allowing the seat to remain usable, avoiding the drawback of complete valve報(bào)廢 due to seal failure.

5. Depending on user requirements, different alloys can be welded, and the selection of bimetallic sealing rings can cater to various industrial sectors with stringent demands for wear resistance, corrosion resistance, high temperature resistance, and reliable sealing.

Product Execution Standards

Main Component Materials