A 63 mm Ravandas Double Union PP Ball Valve is a type of valve that is commonly used in the construction of pipes and pipelines. It is a mechanical valve that has a rotating ball with a double set of ports that are threaded to a valve body. This type of valve is typically used in high-pressure systems. The 63 mm Ravandas Double Union PP Ball Valve is manufactured from polypropylene, which is a material that is lightweight, durable, and non-corrosive.