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    CD, did you figure this out yet? I have a very...

    CD, did you figure this out yet? I have a very similiar question posted in here. I have a relatively new oil burner with a tankless hot water system. I also have kids and every time they get in that...
  2. Hey Michael! There are two types of check valves....

    Hey Michael! There are two types of check valves. Unless you are powering your circulating pumps through a PV DC (solar panel), you should use the spring type check valves for AC circulating pumps....
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