What is causing this?
Ok i just took the cover off wall for upstairs run at the house we just moved into and seen this. What caused this and how do you fix it? We are rural so not like someone can just come over and look easily cause about 45 min from nearest City. I'm very mechanically inclined and have no issue tackling it just need to know cause and what to replace. Looks like a brown (presume rust mixed with Glycol) but is that pressure overflow or is that there to tell someone there is a failure? There are 3 that look like this.
Comments
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Just clean that stuff off with a ScotchBrite pad or some steel wool. even plumbers grit cloth. There is a miniscule leak that is of no concern. By the time the water leaks out it evaporates leaving any minerals behind. you are seeing those minerals (possibly iron oxides) just like if you let some water evaporate in a container over a few months. If there is anything suspended or dissolved in that water, it will stay behind after the water evaporates, leaving a telltale sign of its existence.
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
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the second and third pictures are concerning. It that a casting, looks like it’s leaking from the flats for a wrenching point.
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not if it’s the casting?
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remove and replace the check valve.
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Add a couple pictures from couple foot back so we can see the configuration and any isolation valves in the area. If you use the picture icon to attach the photos, it will save us from having to open each JPEG.
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If it is glycol, that dark color often indicates the glycol has gone acidic It will attack the soft metals
I would flush the system, run a cleaner, then refill
If there are no pipes exposed to freezing, you may not need glycol
Those look like the older flow setters that you clamped a meter around to read. I don’t see a reason for check valves on the loops?
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
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ill take some photos in next few days when i can get to the pantry its in. Just redoing Kitchen and 1 of the cabinets is in the way. The house was built 2007 so all this Hydronic is from then. This was from the upstairs manifolds and loop as the downstairs manifolds I never seen anything like that on them.
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It sure looks like something ate through that fitting.
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@mattmia2 I thought so too until I took another look at the first picture in the original post. That pic shows discharge at 9 and 3 o'clock on the fitting. If you look behind that fitting in the same picture, you can see a perfectly round hole that seems to me to be a round hole made by the manufacturer. They look like "weep holes," which tells me the fitting is doing what it was designed to do. Take another look? What's going on there?
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I think you have the electronic Tru flow style if there is no visual window
There was a meter ghat clamped around them to read flow
I believe the visual type git the sane dimension
Or extend the pex and do away with them altogether
Ebay may be the only source, go 10 bucks you could buy aHere are the two types
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Are those little plastic or glass windows in the clamp on type?
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II've Been trying to search everywhere online to find a fitting that looks the same but can't. These look like light rectangle "Ports" or "windows" that couple have leaked who knows when. The heat is off for summer so no idea when or if they always leak but want to find out what parts to change before fall so ready for when heat does start
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they have been superseded by the version with the big window and the bead.
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