Beaver Mini 1st Stage Pressure Reducing Valve. Designed for compressed air where pressure reduction from cylinder pressure to regulated working pressures of between 8 Ÿ?? 9 Bar is required. For use with air in non-breathing applications- such as tyre inflation- argon suit systems etc. The balanced design controls air regulation at various depths- providing a stable outlet pressure. Complete with internal over pressure relief valve that will protect should outlet pressures exceed 12.5 Bar. Manufactured with a standard male 232 Bar DIN fitting.