Would it really make a difference? Even with larger air line the valves are still 1/4" and manual at that. The valves arent any quicker by adding bigger line right? There's only so much air that will get through the valve. Wouldnt it take longer for the same amount of air to get through the valve but instead of 1/4" line its larger line so there is more room to fill in the line before the bag fills.