Flexible hose and connection for a gas grill

Our city has changed the codes and now propane grills are not allowed on attached decks. I can change mine to run on natural gas, though, and plan to do that. I need to have a gas line run. What is the state of the art for a quick disconnect/shutoff/flexible pipe (something that will allow repeated flex, not something like a flex hose to install a stove - as I understand those, they are designed for infrequent movement).

gas grill connection

There are hoses with quick connectors much like air hoses. I'm sure you know you can't run a propane grill on natural gas. It takes totally different "innerards" to run natural gas. Check with the natural gas supplier, they can help you find the best fittings and hose.