Wrought steel flange ball valve is a kind of ball valve made of forged steel and connected to the pipe through flange connection, which is widely used in the industrial field. 

 Structural characteristics 

 ● Valve body and valve cover: usually made of high-quality carbon steel, stainless steel or alloy steel, which are forged and precision processed at high temperature, with dense internal structure and high strength. 

 ● Sphere: It is the core component, generally made of stainless steel, and the surface is precisely polished to ensure the tightness with the valve seat. 

 ● Valve stem: connect the actuator and the sphere, mostly use high-strength alloy steel, the surface is treated with anti-corrosion, and the spherical switch is driven by rotation. 

 ● Sealing ring: high-performance plastic materials such as polytetrafluoroethylene (PTFE) are often used to ensure the good sealing performance of the valve. 

 ● Actuator: There are various forms such as manual operation handle, electric actuator, pneumatic actuator, etc., which are used to drive the valve stem to rotate and control the position of the sphere. 

 Operating principle 

 The ball is driven to rotate by rotating the valve stem. When the valve stem rotates 90 degrees, the through hole on the sphere is connected to the pipe, the fluid can pass freely, and the valve is in an open state; continue to rotate the valve stem 90 degrees, and the solid part of the sphere blocks the fluid channel to close.

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.