SERIE 3000 fittings are made of bronze with low lead content and are characterized by threads in compliance with EN 10226/ ISO 7, so pressure-tight joints are not made on the threads. The choice of bronze, a notoriously noble material with marked corrosion resistance qualities, is mainly due to its hygienic safety and particular reliability offered in extremely adverse installation conditions, and complete lack of dezincification, hence to guaranteeing excellent durability.