“This product works awesome. Installed it after my flow check valve and before my circulator pump. It took a while for the circulator pump noise to go away.”
“I used the first Spirovent in 1991 on a hydronic baseboard heating system that refused to be totally bled of air. I never had a problem with air in the system.”
“I am using this air separator in my closed circuit domestic water heating system (heat exchanger type). I know it is working because I also have a sight flow gauge.”
“All were the same brand and models as old valves. Are working well on testing of heating system. Old ones were 19 years old and occasionally sticking. Jim”
