Air pressure relief valve pressure regulating right steps

1, what is the air pressure relief valve? Is by adjusting the air pressure relief valve, reduced the inlet pressure to a needed discharge pressure, and to rely on the energy of the medium itself, make the outlet pressure automatically to keep the stability of the valve gate. 2, air pressure relief valve pressure regulating steps: 1) Close the air valve in front of the gate door, after open air pressure relief valve gate valve gate, downstream manufacturing low pressure environment; 2) The adjusting screw counterclockwise rotation to the on position ( Relative to the lowest outlet pressure) After, and then close the air pressure relief valve gate valve gate; 3) Slowly open the gate door in front of the air pressure reducing valve to fully open; 4) Slowly turn adjusting screw clockwise, the outlet pressure to the pressure needed to ( The table after the valve pressure shall prevail) ; After they adjust lock nut lock, after open the relief valve gate valve gate; 5) Such as when adjusting the outlet pressure is higher than the set pressure, must start from the first step to adjust, namely only from low pressure to high pressure.