Gas flex line is only good for home use with NG. it's only designed for use ins max 4 foot sections to hook up a home appliance. the smallest this line comes in is 1/2 inch dia. so using it on a longer run will decrease the psi leaving a lazy flame at the appliance your are fueling. the best way to run gas lines of any type is to get a proper sizing chart and go from there If it were my camper I would use copper line most likely a max size of 3/8" make sure it is labeled Type G for gas not ac, or water its easy to bend into position and will not deteriorate over time like water or ac copper. Hope this helps