... 40mm, 50mm, 63mm,75mm7. Color: Nickel plated.Advantage:1. Sanitary, non-toxic, no heavy metal additives, directly apply to the water ... scaling, no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Convenient installation, reliable, recycled, environmental protection ... equipment.7. Piping system for other industries and agriculture. High quality double-head PPR ball valve