What are the characteristics of a hard-sealed ball?

The characteristics of hard-sealed balls are as follows:

1.  **Low Flow Resistance:** When a full-bore ball valve is open, the passage within the ball, the valve body channel, and the connecting pipe share the same diameter, forming a continuous conduit that allows the medium to flow through without any loss.

2.  **Rapid Opening and Closing:** The ball valve can be fully opened or closed simply by rotating the ball 90 degrees.

3.  **High Temperature Resistance:** Capable of withstanding temperatures up to 800°C, it is suitable for use in various high-temperature and high-pressure applications across industries such as water treatment, steam generation, petroleum, coal, and steel manufacturing.

4.  **High Hardness and Strong Wear Resistance:** With a maximum hardness reaching HRV 67–72, it is suitable for use in harsh operating environments involving high impurity levels, severe corrosion, and the flow of media containing particulate matter.

Hard-sealed balls utilize a variety of advanced hardening technologies for both the ball and the valve seat, including supersonic thermal spraying, nickel-based surfacing, hard alloy surfacing, and the application of high-strength, high-hardness ceramic materials.

The primary characteristics of hard-sealed balls are those outlined above; it is essential for everyone to understand these key features associated with this type of valve component.