I have a 1 1/4" weighted Taco check valve, that clatters. It is installed between the supply and return manifolds. There is an elbow about 4 inches before it. I have my system plumbed to Tarms specs with a Termovar valve on the return line to keep the return temps lower and allowing the storage tank to charge. Is is just a bad check valve, or is the elbow creating turbulence? Any ideas?
Help, Clattering check valve
- Thread starter kevindauch
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I have had brand new check valves clatters on water system, does not effect their performance other than being annoying. My swing check on my system clatters, I call it the wife, some reason the "ole" lady does not find that funny
sdrobertson
Minister of Fire
603doug said:
My wife calls my boiler my girlfriend because I enjoy standing there watching the temp gauges move up and down. Maybe I should install swing check valve so then in theory, my wife would be in the room with us and wouldn't get so irritated when I'm out there "tending the fire".
I have a check valve on my solar loop the clatters after filling/refilling. It's definitely air bubbles passing by. The air scoop eventually gets it all, but it takes 3-4 hours, even after bleeding etc.
I believe that air may be stuck in the manifold. I'm unable to purge it out though. I believe that the Termovar valve is hindering me from doing so. Right now I have the check valve open, actually it's been open since I installed the system last fall. I didn't close it after purging the system, forgot. I just noticed it and closed the valve, then the clattering. I haven't had any other check valves in the system complaining though. This spring I'll have another go at it. Maybe put a vent elbow before it.
I just looked in my Modern Hydronic Heating book. It suggests that you should have 12 pipe diameters of straight pipe ahead of a check valve. That elbow could very well be the problem.
Thanks, I can move the location of the check valve, before the elbow. It will be at the end of the manifold, I should have 14 + inches before the check valve. If not, I'll add some pipe.
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