PURPOSE: To obtain a flow rate control device for liquefied petroleum gas or the like which is excellent in workability and mass productivity by installing a recessed part based on laser work to a member which is equivalent to a filter on a valve mechanism.

CONSTITUTION: A flow rate control device for liquefied petroleum or the like comprises a gas discharge nozzle 5, a valve disk 4 and a valve seat member 6, which are all mounted to an opening of a vessel 1 which houses butane, isobutane and propane or other liquefied hydrocarbon mixed fuels in air tight state. A laser work-based recessed part 12 is installed on the filter counterpart side of a member corresponding to a filter 8 made of fine porous thin films or the like.