Flexible gas line riser

An apparatus for connecting a gas line to a threaded connector, the apparatus comprising,

• a threaded adapter disposed at a first end of the apparatus, the adapter having a first threaded end configured to threadingly engage the threaded connector and a second threaded end;
• a nut configured to threadingly engage the second threaded end of the threaded adapter to form an internal cavity between the threaded adapter, the nut, and the gas line, the nut having an internally sloped shoulder forming an outer end of the internal cavity;
• a flexible seal disposed in the internal cavity adjacent the threaded adapter;
• a collet gripper comprising an annular base and a plurality of fingers extending longitudinally from the annular base, the collet gripper disposed in the internal cavity with the annular base abutting the flexible seal and the plurality of fingers extending away from the threaded adapter, each of the fingers of the collet gripper having a sloped face on an end opposite the threaded adapter and extending substantially parallel to and in abutting relationship with the internally sloped shoulder on the nut;
• and
• a tubular gas line support insert secured within the threaded adapter and extending through the second threaded end thereof forming an annular gap between an outer surface of the tubular gas line support insert and an inner surface of the second threaded end of the threaded adapter, the annular gap sized for insertion of an end of the gas line therein with the gas line extending around the tubular gas line support insert;
• wherein threaded advancement of the nut on the second threaded end of the threaded adapter toward the first threaded end thereon advances the internally sloped shoulder of the nut longitudinally against the sloped face of each of the plurality of fingers driving the plurality of fingers radially inward against the gas line and drives the collet gripper longitudinally along the gas line and toward the flexible seal compressing the flexible seal between annular base of the collet gripper and the threaded adapter such that the flexible seal expands radially inward to frictional engage the gas line.

A gas riser apparatus for connecting a gas line to a connection, the apparatus having a first end and a second end and comprising:

• a threaded adapter disposed at the first end of the apparatus, the threaded adapter having a first externally threaded end and a second externally threaded end;
• a nut configured to threadingly engage the second externally threaded end of the threaded adapter to form an internal cavity between the threaded adapter, the nut, and the gas line, the nut having an internally sloped shoulder forming a portion of the internal cavity;
• a flexible sealing element disposed in the internal cavity proximate the threaded adapter;
• a collet gripper disposed in the internal cavity and having a base end abutting the flexible sealing element and a sloped face of a distal end of the collet gripper abutting the sloped shoulder;
• a tubular gas line support insert connected to and disposed within the threaded adapter and extending through the second threaded end thereof forming an annular gap between an outer surface of the tubular gas line support insert and an inner surface of the second threaded end of the threaded adapter, the annular gap sized for insertion of an end of the gas line therein with the gas line extending around the tubular gas line support insert;
• a flexible casing conduit extending around a portion of a periphery of the gas line;
• a hose ferrule secured to and extending circumferentially around the nut and extending around a portion of the casing conduit;
• and
• a moisture seal disposed proximate the second end of the apparatus, the moisture seal extending around the gas line and the flexible casing conduit;
• wherein:
• threaded advancement of the nut on the second externally threaded end of the threaded adapter toward the first externally threaded end thereon advances the internally sloped shoulder of the nut longitudinally against the sloped face of the collet gripper driving the collet gripper radially inward against the gas line and driving the collet gripper longitudinally along the gas line and toward the flexible seal compressing the flexible seal between annular base of the collet gripper and the threaded adapter such that the flexible seal expands radially inward to frictional engage the gas line.