Abstract: A meter bypass swivel connector is molded with a 1/4" hole located within its upper body portion. A ball check screen or guard separates its upper body portion from its lower body portion to prevent anything from obstructing the customer's service line. A ball check assembly, including a ball, seat, and base, is snapped or screwed into the lower portion of the meter bypass swivel connector. The ball check is configured to allow an uninterrupted or unobstructed flow of gas through the customer's line with pressure as low as 5" of water column. The lower body portion is surrounded by a flange and a swivel nut rests on a metal backup ring disposed on the flange. A swivel gasket installed in the field "seals" the meter bypass swivel connector to the gas meter when the meter nut is tightened to the meter. A one-way coupler is attached in the hole in the meter bypass swivel connector in such a manner that the possibility of a gas leak would be minimal or impossible.