Gas valve works:
     We all know that gas valve, LPG cylinders came out from the first through the high-pressure gas inlet pipe reaches a decompression chamber, when the user closes the gas with the switch, as liquefied petroleum gas into the vacuum chamber increases, the pressure increases, the film by a spring loaded rubber top, present in the gas chamber on the part of the air discharge valve from the breathing hole. Thus, forcing the lever moves up, the use of leverage so that the valve port is closed, cutting off the passage of LPG imports, the pressure reducing valve outlet not rise. When you open the gas appliance switch, liquefied petroleum gas flowing out from the valve, so that decompression chamber pressure drops, the rubber membrane concave, driven lever down, the outside air from the breathing hole into the upper chamber, the valve pad to move, the intake nozzle becomes large, the feed rate increases, the pressure rise. This repeated constantly adjusting the decompression chamber process pressure is always constant, regardless of the inlet pressure is high or low, the outlet pressure is always stable, thus until the buck and the role of regulator.