How to adjust the pressure reducing valve of gas water heater

1, we can unscrew the screw on the handle of the pressure relief valve with a screwdriver, and lift the handle to rotate during pressure relief to adjust the pressure. If you want to pressurize, turn it clockwise; If you want to decompress, turn counterclockwise. If you just check whether the pressure relief valve of the water heater is normal, you only need to remove the screw and pull up the handle to drain the water.