Water meter chambers are compact, monoblock products (without joints or welds), made of polyethylene (PE), manufactured using rotomoulding technology. They are designed to protect the water meter and the connection installation. Manufacturing conditions and general quality requirements for water meter chambers are included in Valrom Industrie’s Company Technical Standard STF 9/2005. Double-layered wall construction variant: a monolithic structure with an outer layer of compact material (mass-colored polyethylene) and an expanded inner layer of polyethylene with expanding agents. Component elements: water meter chamber body, insulation gasket for the lid, insulated lid. Benefits: The monoblock construction, double-layered wall, insulated lid, and the design solutions for sealing the closures and passages (rubber gasket for the lid and for wall penetrations) prevent water infiltration and protect the internal installation from freezing. The reinforced geometry, with horizontal and vertical ribs, provides the chamber with mechanical rigidity without increasing its weight, and consequently, handling and transport time or costs. Approved and technically certified for use in construction.