A method and apparatus for non-interruptible change out of a gas meter utilizing the meter set assembly swivel connections to create a bypass of the meter. The apparatus is machined to conform to the swivel and the threads of the meter inlet and outlet. A clamping mechanism maintains the meter and the apparatus in place while internal mechanisms create a gap between the swivel and the inlet or outlet of the meter. A sliding mechanism disengages the swivel gasket normally disposed between the meter inlet or outlet and the swivel for replacement during the meter exchange. Once the gap is created, a second apparatus similar to the first apparatus is attached to the other of the meter inlet or outlet. A hose providing fluid communication between the two apparatuses acts as the bypass during change out of the meter.