When you open the valve close to the pressure gauges or pressure regulator installed, body lies diagonally in front of the pressure gauge or moderator, please stand in front of the absolutely
When opening the valve, if the pressure gauge or pressure regulator is installed in the vicinity, the body is located in front of the diagonal pressure gauge or regulator, please do not absolutely stand in front
Time to open the valve, when the , is close to the pressure regulator and pressure gauge pressure gauge or the body is positioned diagonally to the front of the regulator, please do not stand in front of the world