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What could be causing my water heater inlet pipe to ...
There is corrosion forming on the inlet and TP valve connections to my water heater; the outlet seems to be fine. More specifically, the nipples are what is corroding. I have read the copper pipe and galvanized steel will cause this, and I assumed this was the issue.On second review of the photos, I don't think that the corrosion is due to electrolysis. The dielectric nipples should be adequate to prevent that and there is no sign of issues with the hot connection. As for the T&P connection, if the copper drain pipe does not come into contact with anything then there is no closed circuit for electrolysis to take place. It looks more like corrosion due to a small leak over a long period of time. A leak that would not have always been noticeable, but would slowly get worse over time. You can see where the water has been dripping and there is signs of calcium buildup. Like I mentioned in a previous comment, I would inspect the sacrificial anode rod and replace it if needed. As for the cold connection, you could: cut the copper line and unscrew the copper section from the nipple brush the nipple with a steel wire brush to remove the buildup reinstall the copper section using teflon tape and a joint compound on the nipple reconnect the copper line that you cut with a shark bite coupling ora solder coupling if you know how You could do the same with the T&P connection, just cut the vertical down pipe so that you can remove the copper pipe from the T&P and then remove the T&P, clean and reinstall. You mentioned that the tank was installed in 2006, so it would be nearing the end of its life expectancy (most residential warranties are for 5 to 6 years) so I would keep an eye on the tank for any leaks.Best answer · 2I'm thinking that the installation is missing this dialectic union . Your "dialectric" nipple has an ABS plastic coating inside a galvanized steel pipe. If the dialectic union were used in conjunction with this nipple it would provide electrical isolation from the copper - galvanize connection. This document explains this in better detail.2Leave it alone. The inlet and outlet threads on your water heater are plastic. It's a one time deal, you've got to do it right the first time. Wait until you need to replace the water heater. Use all copper next time. Mineral deposits can be sign of leakage, but sometimes the deposits seal the leak.2Looks like it was teflon taped, tightened to tank, then soldered , cooking the upper adapter sealant. I try to prep a soldered piece with a copper extension 2-3 inches long soldered on.When i use a coupling to make final solder connection, I wrap a wet rag on lower parts to keep teflon cool.I would be tempted to try a stainless nipple at tank.1"Dielectric nipples" are a marketing term for the most part. They are NOT truly dielectric , because you DO have the dissimilar metals in contact with each other. What these nipples to is prevent the worst EFFECT of having dissimilar pipes in contact, that of the pipe closing off from the INSIDE with corrosion buildup, which you can't see so you don't know it's happening until the water stops flowing. That's because it has a PEX (high temp. plastic) liner on the inside. But because the dissimilar metals are in contact, the corrosion happens on the OUTSIDE, as it is in your case. However, now you can SEE that and replace them when it happens. The only thing that stops the electrical flow is a dielectric UNION that puts a non-conductive material between the metals. Even then, if the water has a lot of dissolved minerals in it, internal corrosion and blockage can still happen because the electrical flow takes place through the water. So the best solution is BOTH the union and the sleeved nipples. Or like I said, when you see the external corrosion, consider it a warning and just replace them. From the photos you posted however, I don't see any kind of union fitting anywhere, so replacing them is going to be difficult. If there isn't one ahead of those pipes somewhere out of the photo, you are going to have to cut or at least de-solder the pipes. Not a great idea for the uninitiated. But if you do, put in a union so you don't have to do it next time, and if you do THAT, make it a dielectric union.1It is electrolysis from two dissimilar metals. You have copper pipe in contact with galvanized steel pipe. A small electrical current is created (Google "thermocouple"). There is no dielectric union between these two metals.
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How to Replace Water Heater Supply Lines | Home Guides ...
Your water heater has a cold water line that constantly feeds water to the water tank as you use the hot water. Another line leads from the tank to supply your home with hot water for showers ...
Steps To Replace Water Heater Inlet? - diychatroom
diychatroom› Home Improvement› PlumbingDec 23, 2008· The pipe that threads into the top of the heater is a 3/4" pipe nipple, and that joins to the union. I doubt that removal of that 3/4" nipple will be easy at all. The minerals in the water and electrolysis will attack metals in the water heater and supply plumbing.
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Leaking Hot Water Heater Pipes | Water Heaters | …
A leaking hot water heater can result from leaks in the pipes. At the top of your hot water heater you have an inlet and an outlet pipe. The cold water comes in and hot water goes out.
Water Heater Leaking? (HERE'S WHAT TO DO) | Water Heater Hub
Your water heater should have a dedicated cold water shut-off valve typically located near where the cold water inlet pipe connects to the tank. This valve will be one of two types: Ball Valve – Handle which you will need to turn 90 degrees so that it is perpendicular to the pipe; or
How to Replace a Corroded Water-Heater Fitting - This …
Nov 10, 2014· This Old House plumbing and heating expert Richard Trethewey shows how to replace a rusted, ready-to-burst fitting. (See below for a shopping list and tools.)
water inlet pipe | eBay
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How to Replace a Water Heater Dip Tube - Water Heater Hub
The dip tube on a water heater is used to channel cold water from the inlet at the top of the unit down to the bottom, ensuring that the water is circulated and heated evenly.
Removing Difficult Nipple from Water Heater.mp4 - YouTube
Jun 20, 2012· Removing Difficult Nipple from Water Heater.mp4 Kevin Dickson. ... the factory installs an EPDM anti-thermosiphon washer on both the inlet and outlet nipples. It's a good design - …
How to Replace Corroded Couplings for Hot Water Tanks ...
1. Turn off the water heater. Open the hot water faucet in one of your bathtubs, and let the water run until it is tepid. Turn off the tub faucet, then turn off the cold water inlet valve on the ...
Water Heater Piping Connections & Installation
Four pipe connections: a range boiler typically has four pipe connections: two circulating water through the heatin boiler heat exchanger or a side-arm coil to heat the water in the tank and a cold water inlet from the building water supply along with a hot water outlet supplying building water fixtures.
L10 Water Inlet Pipe | L10 Parts | eccotemp
This is the Eccotemp water inlet pipe for the L10. It is very easy to install/replace. Simply unscrew the old one and replace it with the new one.
Install a Gas Water Heater - Lowe's
The water heater inlet and outlet connections contain nonmetallic parts. Don’t solder pipe directly to these connections. Instead, solder threaded adapters to short pieces of pipe so that soldering is done one foot or so from the water heater connections.
Glossary of Terms - Water Heater Leaking Info
Glossary of Terms. Anode Rod. A long, replaceable metallic rod located inside the tank, typically attached at the top of the water heater near the cold water inlet. ... A gate or knob-type valve that is located on the cold water inlet pipe, usually close to where it enters the tank. ... A water heater that is powered by gas rather than ...
How a Tankless Water Heater Works | Rinnai America
When the need for hot water arises by turning on a shower, washing machine, dishwasher or faucet, cold water flows into the Rinnai Tankless Water Heater from the inlet pipe at the bottom of the heater.
Water Heater Leaking From Top? Here’s What to Do | …
If there is water leaking from the piping attached to the T&P relief valve and also from the open end of the pipe, there’s most likely too much pressure in the water heater or the water is too hot. Have a professional inspect your tank to determine the issue.
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Replacement Parts - American Water Heaters
17 Air Inlet Pipe Assembly [100, 130, & 150 MBtu’s] 6903783 17 Air Inlet Pipe Assembly [175 & 199 MBtu’s] 6903789 23 Air Inlet Pipe Assembly [100-Gallon] 6907349