hot water pipe keeps leaking
01-28-2009, 10:53 PM
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7thGenAccord
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hot water pipe keeps leaking
I need some help. The hot water pipe at my house keeps on leaking. The copper pipes running from the hot water tank developed some cavities. We solder the cavity and another cavity would develop. So far, there has been a leak in 3 different locations. Luckily, it has only been the copper pipes running in the attic of the garage. The house is about 4 years and couple months old. The first time it leak was in July of 08. The 2nd and 3rd leak happened last week. Can someone explain to me how copper pipes develop these small cavity?
01-29-2009, 11:35 AM
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Matt
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WTF is this? Our Acurazine rambling questions are being outsourced to Google?
02-02-2009, 07:22 AM
#6
Moderator Alumnus
I need some help. The hot water pipe at my house keeps on leaking. The copper pipes running from the hot water tank developed some cavities. We solder the cavity and another cavity would develop. So far, there has been a leak in 3 different locations. Luckily, it has only been the copper pipes running in the attic of the garage. The house is about 4 years and couple months old. The first time it leak was in July of 08. The 2nd and 3rd leak happened last week. Can someone explain to me how copper pipes develop these small cavity?
Although from NSTNEXT's URL
The known causes are: 1.) Water condition - PH, mineral content or lack of, dissolve gases, microorganisms etc. 2.) Excessive flux used in the soldering of the pipes. 3.) Water velocity in the pipes - Copper gets a thin green coating this actually inhibits further corrosion. If the velocity of the water is too high due to undersized pipes being used the green coating may be eroded causing further corrosion. 4.) Electrolysis - you are correct in assuming that the stray millivolts may have something to do with your problem. Stray voltages may be from improper grounding, of electrical, cable tv, phone. Or, leakages of current from water heaters, circulator pumps, well water pumps, boilers etc. 5.) dissimilar metals used on the piping or in contact with piping can also be a problem we all have seen where a lazy hack has used steel strap to hang a copper pipe or used a black iron nipple because he was to lazy to head for the supply house when he was 1 short for the job.
Also, if it's from acidic water (too soft) your neighbors would have the same problems... Talk to them and see if they have problems as well.
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