In an hydraulic system, the pressure limiter valves are an essential organ for the proper functioning and maintenance in the time of the efficiency of the components that compose it. The valve VMD1N protects the system form too high pressure levels, avoiding malfunctioning or breaking. The valve VMD1N is a direct acting cartridge valve. A poppet placed present into the valve open the flow through the cartridge when the pressure into the system reaches the setting rate. Thanks to the screw regulator is possible to set the opening pressure for the valve. Many pressure ranges are available for opening pressure up to 350 bar. Maximum working pressure for VMD1N valve is 350 bar, while it is recommended a working flow up to 20 lpm. The VBF6 pressure limiter valves can be installed in 2-way cavities dimensioned according to the SAE08 standard (3/4-16 UNF thread). The external components are built with steel and protected against the corrosion with zinc plating treatment. For application with extremely aggressive corrosive agents (e.g. marine applications) the protection can be improved with zinc-nickel plating. The setting can be sealed with plastic anti-tampering caps.