Abstract: A combined vent cap and inspection cap fitting assembly includes a top cap that has a planar top surface and a sidewall extending downward therefrom. Such cap fitting assemblies may be either air-tight or air-flow fitting assemblies depending on whether the present invention is applied inspection cap fittings or vent cap fittings respectively. A bottom cap is seated on the conduit top opening and has an outer wall engaged with the conduit that is spaced inward from the top cap outer wall such that a gap is formed therebetween, allowing ambient air to flow upwardly between the top and bottom caps outer walls, and downwardly through the bottom cap top opening and the conduit. An adapter coupling is removably mated to the conduit. The outer wall of the bottom cap terminates subjacent of the top cap sidewall.