Burner valves are attached to the main gas line. When the switch is turned the gas then flows into a tube that mixes with air, creating the appropriate mixture for combustion.
Since removing the burner valve would disable the cooktop, I ordered the valve first. Unfortunately the valve could not be removed because the screw that hold it in place was frozen to the valve and manifold. I finally had to cut the screw off with a hacksaw. Since the screw is a special screw, substitutions did not work, so I had to order the screw and pay shipping a second time. These screws should be included with the valve. Anyway, the hacksaw did some slight damage to the manifold so that the screw did not seal off properly. I had to use a Dremel tool to smooth the surface and then use fiberglass to coat the surface to seal any scratches or potential leaks. I screwed the screw in after applying the fiberglass resin to the manifold surface while the resin was still pliable. This seemed to seal the manifold off so that there is no leak, but it does make me nervous. Because of having to reorder for the additional part, the range top took almost a week to repair and could not be used during that time all because the screw was not included with the burner valve. Also a screw with a larger head would have allowed a larger wrench to be used and the screw could have been removed easily. The screw head was so small that it rounded off from the wrench making it more difficult to remove.
This was remove and replace of burner valve on a rangetop stove. Removed front pannel of stove. Removed lower panel support. Removed ignition/spark material/peice (slides right off). Unscrewed valve form underneath through access hole, and unscrewed gas connection on top. Removed and eplaced with new valve and reassembled everything in order. Fairly straight forward.
removed old electric cooktop and install gas line and gas cooktop and change from natural gas to LP remove and replace orifice with new ones from kit, my cooktop called for 2 black orifices in the two small burners but did not come in the parts kit that I orded so I used 2 red orifices and it seems to work just fine.
