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Q. I just purchased a new commercial gas stove for my home. I do have an old gas stove working now. Are there any special do's and don'ts on installing the new one or should I have a professional install it for me?

A. Basic installation should not be different than how the existing stove is installed and connected. What is important is to replace the existing gas connection flex line and valve with the new parts used these days. Next, use the 7/8-flex connector with a matching shut off valve on the natural gas supply pipe. New parts and old existing parts used for stoves and ranges connecting to natural gas supply pipes do not interchange with each other. The best place to obtain the new parts, made from new metal materials approved for natural gas, is at the local privately owned hardware stores in your area. Depending upon your state and area, minor codes might apply slightly differently for local installations.