Not familiar with dynaglow something special about it? thats how ovens, and clothes dryers , are hooked up . many of the flare adapters for the flex lines have 3/8 id and 1/2 od threads negating the need for a 1/2 x3/8 reducer. Does your code allow a flex line or all hard pipe? check with local building department. You might not be allowed to work on your own property there!