... delivery PPR ball valve:Application:1.Hot & cold water facilities for civil buildings, dwelling house,swimming pools,air port,hospital, ... pipe systems of food, chemical as well as electron, for instance.deionized water2.Drinking water supply3.Air conditioning system4.Pipe ... non-toxic: the product, green building materials, can be used for the piping system of pure drinking water.2.Polypropylene-random ...