Body and jacket:
Steel S275JR (equivalent to Fe360), internal and external epoxy coated
Sealing seat welded on jacket:
Stainless steel 1.4301 (equivalent to AISI 304)
Galvanised steel class 8.8
Steel ASTM A194 2H
All metal, rubber, and coatings used have been designed for contact with water for human consumption, pursuant to the terms of Italian Health Ministry decree n° 174, dated 6/4/2004.