Dear Mr. Aahemad F. Mansuri ...
Published by AGGASIT DAD, Energy and Environmental including CDM and Innovation Project Consultant Freelancer
Dear Mr. Aahemad F. Mansuri
In my point of view, I think your you use the right way but if you want to decrease the cost of Air Blast, In Thailand, We use Air draft Flotation by feeding water in side 1/4 or 1/2 with 8-9 Bar pressure. Water can help to clean your pipe.
AGGASIT DAD