Gas light accessories are very essential and some of the accessories such as gas light valves, orifices and regulators maintain the smooth function of your outdoor patio lights. Gas light valves control the flow of gas and enhance smooth air pressure; similarly orifices are also vital since it controls the direction of the gas flow. Also the gas orifices control the rate of flow of speed, direction and the pressure that emerges from that. It is used to increase the flow and it generally looks in the shape of a round hole with sharp edges and it is one of the accessories that make the rate of flow of gas constant. Periodic replacement of these accessories should be made and do check it whether they are working in proper condition or has some problem. Also see that your regulator works properly and any damages such as block in those items decrease the lightening power of the gas lights and make your outdoor looks dull.