Working principle

Closing process: When the valve is closed, an elastic seal is formed between the half ball and the seat, and the effect of the medium pressure makes the sealing ring of the ball and the seat tightly close together to ensure that there is no leakage.

Opening process: When opening, the ball of the spool is progressive along the seat, effectively removing the scale barrier and achieving a reliable seal. The double eccentric structure makes the spool located in the ball chamber when it is opened, the flow section is large, and the valve is not washed.

Characteristics and advantages

Self-cleaning and anti-scarring: The unique double eccentric structure makes the cutting action between the hemisphere and the seat when closed can remove the scale and adhesion on the sealing surface, and has the effect of "self-cleaning" and "anti-scarring".

Excellent sealing performance: non-metallic elastic material is embedded in the metal seat, the metal surface of the valve seat is well protected, and the sealing pair uses a metal surface ring with a hard surface contact seal to ensure long-term stable sealing performance.

Compact structure: Double eccentric half ball valve simple structure, small size, light weight, easy to install and maintain.