Knowledge of valve ball Part I material Commonly used valve material classification Valve bearing parts materials: 1.1. Pressure member definition: a part containing a flow that is released into the atmosphere upon failure 1.2. Categories: Carbon steel (casting, e.g. WCB; Forgings such as: A105) Stainless steel (casting: ZG022Cr18Ni10; Forging: 022Cr18Ni10) Steel for high temperature (425-800℃) […]

Ball valve is evolved from the plug valve, its opening and closing parts is a ball, the ball rotation 90 degrees around the axis of the stem to achieve the purpose of opening and closing. They are designed to cut off, distribute and change the direction of medium flow in pipelines.