... 1/2", 25mm*3/4", 32mm*1".7. Color: Nickel plated.Advantage:1. Sanitary, non-toxic, no heavy metal ... scaling, no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Convenient installation, reliable, recycled, environmental ... .6. Caliduct, floor and wall heating equipment.7. Piping system for other industries and agriculture. High quality nickel plated PPR ball valve