How to adjust the outlet pressure of the Pressure Reducing valve ?

1. SLOWLY adjust the screw with Clock wise is increase pressure; when the valve is shaking , please also SLOWLY adjust the needle valve.
2.SLOWLY adjust the screw with Anti-Clock wise is decrease pressure; when the valve isshaking , please also SLOWLY adjust the needle valve
3.For the how much bar pressure changed by one turn, there will be tiny difference caused by different inlet pressure or outlet pressure of control valve. So for the actual setting pressure, it will be according to pressure guage in the pipeline or in the control valve