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Cleaning out perpetually clogged steam boiler
I am in the process of cleaning out the inside of my residential steam boiler. This unit has clogged multiple times per year at the sight glass openings due to buildup of sediment in the unit. I am looking to blow out all of the junk inside. I have located an opening by temporarily removing the skim valve so that I can access the inside to use a pressure washer. One challenge is that the opening that I have to work with is only 1" in diameter so a traditional pressure washer wand with nozzle will not fit through this. I recall reading from my prior post that there are specific wands that professionals use to do this. I need something thin <1 inch wide and also something that will spray a wide circumference to hit all angles of the inside of the boiler to knock down all of the sludge and sediment. Can anyone recommend something that will work for me? I tried to google search but did not find.
I previously posted a question to this forum. Here is the thread: https://forum.heatinghelp.com/discussion/165675/steam-boiler-clogging-repeatedly#latest
Appreciate any advise I can get from the pros!