essure fluctuations over the set value, the relief valve in 0.2 seconds, all open immediately , The pressure will be released through the air flow, which play a role in protecting the high-pressure fan, when the pressure inside the high-pressure fan down to the safety value, the valve slowly closed, will not cause the second high-pressure fan pressure fluctuations. Plastic, internal steel mesh, acid and moisture corrosion.
RV-01 series relief valve adjustment value of 0-300mbar,
RV-02 series re