Costruction: sheet metal S235JR EN10025, assembled and welded with use of automatic installations in the controlled atmosphere.
Processing: vitrified internal (EMAIL), applied in the oven at 860°, useful to use and consumption of drinking water.
Insulation and external finish: 500 model: don't removable rigid polyurethane; removable rigid polyurethane cupels for the other models. ABS external finish until 500 model; PVC finish for the 800÷1000 models.