Alternate fuel systems-LNG, CNG, LPG-include approved and marked supply containers and valves, gauges, vaporizers, regulators, vents, hoses and manifolds. The components of the alternate fuel system shall be inspected. The vehicle shall be rejected if the alternate fuel system does not comply with all applicable requirements of § 175.241 (relating to compressed and liquefied gas fuel systems).
67 Pa. Code § 175.242