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Forum Thread
Corrosion on hot water valve only? [No OT]
January 3, 2017 at
07:06 AM
There's one faucet in my house where the hot water valve side corrodes. The house is 12yo - the original faucet (we are 2nd owners) corroded on the hot side. I stripped it down, cleaned up the corrosion (CLR), and put it back, but it corroded badly within months. With that faucet the corrosion started to limit the hot water flowrate.
I then replaced the faucet but now a few years later the corrosion is there again. It's not to the point where it's impacting water flow though. corrosion affects the valve/handle itself, not the "body" that is mounted to the sink itself. Sink is porcelain/ceramic-coated steel or iron, probably.
Other info - this is probably the "farthest" faucet from the water distribution (2nd floor MBR); water is from a well and I use a softener (NaCl); all copper distribution within the walls. I don't recall what the connecting lines between the copper and faucet are off the top of my head.
I don't know what the faucet is made of.... wondering if this is some sort of galvanic issue, but why THIS location only?
I then replaced the faucet but now a few years later the corrosion is there again. It's not to the point where it's impacting water flow though. corrosion affects the valve/handle itself, not the "body" that is mounted to the sink itself. Sink is porcelain/ceramic-coated steel or iron, probably.
Other info - this is probably the "farthest" faucet from the water distribution (2nd floor MBR); water is from a well and I use a softener (NaCl); all copper distribution within the walls. I don't recall what the connecting lines between the copper and faucet are off the top of my head.
I don't know what the faucet is made of.... wondering if this is some sort of galvanic issue, but why THIS location only?
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I then replaced the faucet but now a few years later the corrosion is there again. It's not to the point where it's impacting water flow though. corrosion affects the valve/handle itself, not the "body" that is mounted to the sink itself. Sink is porcelain/ceramic-coated steel or iron, probably.
Other info - this is probably the "farthest" faucet from the water distribution (2nd floor MBR); water is from a well and I use a softener (NaCl); all copper distribution within the walls. I don't recall what the connecting lines between the copper and faucet are off the top of my head.
I don't know what the faucet is made of.... wondering if this is some sort of galvanic issue, but why THIS location only?
Edit: I keep asking DH to replace the sink in there but he just doesn't have the time.
Edit: I keep asking DH to replace the sink in there but he just doesn't have the time.
Yes. We have 3 BR and a total of probably 10 faucets in the house of various construction. In this LOCATION only do we get this corrosion and on the hot side ONLY. I've replaced it once.... probably 3-4 years ago as I recall (an SD actually).
I think the issue might be galvanic but why this location only?
I think the issue might be galvanic but why this location only?
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Have you had your well water tested?
Maybe there is an interaction of water chemistry and metal interaction that is not occurring elsewhere.
Is your electrical system grounded to the only to the plumbing? You may have some stray current contributing to your corrosion issues.
I also don't know if the sink MOC is different from the rest; we have 3 of these (similar) ceramic sinks in the house which I assume are steel/iron core with a ceramic/porcelain "coating" although they are original to the house.
I am figuring that there's something galvanic (dissimilar metals/electrolytic) going on here but am struggling to determine what makes this specific location different than the others.
As far as the actual faucet construction - THIS [deltafaucet.com]is the actual faucet I installed sometime around October 2013. Actually looking at the cut sheet for it I also see "• Lifetime limited warranty on parts (other than electronic parts and batteries) and finishes: or, for commercial users, for 5 years from date of purchase."
That might help with a replacement but that one will likely just corrode as well.
Have you had your well water tested?
Maybe there is an interaction of water chemistry and metal interaction that is not occurring elsewhere.
Is your electrical system grounded to the only to the plumbing? You may have some stray current contributing to your corrosion issues.
Actually probably the furthest!