Water meter vaults are compact, monobloc products (without joints or welds), made of polyethylene (PE), manufactured using rotomoulding technology. They are designed to protect the water meter and connection installation. Manufacturing conditions and general quality requirements for water meter vaults are included in Valrom Industrie Company Technical Standard STF 9/2005. Double-layer wall construction variant: monolithic construction with outer layer of compact material (mass-colored polyethylene) and expanded inner layer of polyethylene with expanding agents. Component elements – water meter vault body – insulation gasket for lid – thermally insulated lid – installation of or 3/4 generally consisting of: polyethylene pipes, compression fittings and isolation valves. Installations with customized components can be made according to requirements – water meter DN15, respectively DN20. Benefits: The monobloc construction, double-layer wall, thermally insulated lid and design solutions for closure and sealing of penetrations rubber gasket at lid and for wall penetrations make water infiltration impossible and protect the interior installation from freezing. The reinforced geometry, with horizontal and vertical ribs, provides the vault with mechanical rigidity without increasing its weight and implicitly the time or costs of handling and transport. Approval and technical agrément for use in construction.