A.    Natural Gas or Central Butane System Installation. All gas piping installed below ground shall have a minimum earth cover of eighteen (18) inches. Gas mains shall not be installed under any mobilehome.

    B.    System Shutoff Valve. A readily accessible and identified shutoff valve, controlling the flow of fuel to the central fuel piping system, shall be installed near the point of connection to the main fuel supply point.

    C.    Mobilehome Lot Shutoff Valve. Each mobilehome lot shall have a city-approved fuel shutoff valve installed upstream of the mobilehome fuel outlet and located on the outlet riser at a height of not less than four inches above grade. Whenever the mobilehome lot outlet is not in use, the outlet shall be equipped with a city-approved cap or plug to prevent accidental discharge of fuel.

    D.    Mobilehome Connector. Each mobilehome shall be connected to the mobilehome lot outlet by an approved three-quarter-inch mobilehome connector not more than six feet in length. City-approved pipe and fittings may be used between the flexible connector and mobilehome lot fuel outlet when the distance between the mobilehome lot fuel outlet and the mobilehome fuel service connection exceeds that required to make a safe installation with only a mobilehome connector.

    E.    Fuel Oil Distribution System. Piping installed below ground shall have a minimum earth cover of eighteen (18) inches and all fuel lines shall be provided with a stopcock at the outlet of the fuel container and another stopcock just before the fuel line enters the mobilehome.

    F.    Vent. Every fuel oil tank shall be vented by a vent not less than one and one-fourth-inch iron pipe size, so designed and installed to prevent entrance of rain or debris.

    G.    Fuel Oil Connector. Fuel oil connector from the tank to the mobilehome shall be brass or copper tubing or approved flexible metal hose not smaller than three-eights-inch iron pipe or tubing, and shall be protected from physical damage. (Prior code § 23-2-36)