Crimped gas riser with jacket assembly

A riser assembly for transmitting gas from a buried line to a meter manifold, the riser assembly comprising:

• an adapter having a passageway extending from a first end to a second end of the adapter, the passageway defined by a plurality of cylindrical surfaces;
• a stiffener received in the passageway and having a radial shoulder with a diameter greater than a diameter of one of the plurality of surfaces located adjacent the first end of the adapter thereby preventing the stiffener from axially moving beyond said one of the plurality of surfaces, the stiffener further having a tubular portion that extends outwardly from the radial shoulder toward the second end of the adapter;
• an inner casing having a first end that receives the tubular portion and abuts the radial shoulder of the stiffener in the adapter and a second end spaced from the first end for connecting the adapter to an associated buried line;
• a steel liner received over the inner casing and having a first end received in the adapter and a second end spaced from the first end a distance sufficient to cover the inner casing outside the adapter and above ground;
• and
• a polyethylene jacket formed over the steel liner from the adapter to at least the ground for protecting the steel liner from impact damage;
• wherein the adapter is crimped onto at least one of the jacket, the liner, and a crimp ring positioned between the liner and the adapter at a location generally adjacent the second end of the adapter.