How to adjust the pressure of pressure reducing valve of Jinlong bus natural gas vehicle

Close the front switch valve and open the back valve. Turn the adjusting screw to the highest position. Then close the switch valve at the back. Then slowly open the front valve. Turn the screw clockwise to adjust the pressure to the required level. After adjustment, lock the nut and open the valve at the back.

The working principle of gas pressure reducing valve is mainly controlled by the pressure behind the valve. When the pressure sensor detects that the valve pressure indicates an increase, the valve opening of the pressure reducing valve decreases; When the pressure drop after the pressure reducing valve is detected, the valve opening of the natural gas pressure reducing valve is increased to meet the control requirements. The pressure reduction ratio of natural gas pressure reducing valve is higher than the system value to some extent.

It should be able to respond to positive or negative control signals even at maximum or minimum flow. These valves should be selected according to the useful control range, that is, 20% to 80% of the maximum flow. Normal is proportional or has proportional characteristics. These types of valves have the best flow characteristics and flow range required for proportional control. Natural gas pressure reducing valve should generally be installed horizontally on the pipeline.