Quote:
quote:Originally posted by LazyPup
The requirement to use dielectric couplings between copper and iron pipe or vessels has been a code standard in all codes for over 30 years.
In this region if copper is directly coupled to the iron it will begin to corrode within 6 months and normally will leak within the first year.
It is nearly impossible to remove a copper male adapter that has corroded in place by electrolisys and normally requires replacing the entire tank.
Due to the code requirement, many water heater manufacturers are now installing dielectric fittings during manufacturing or packing them in the box with a new water heater.
In this particular city, the water company is required to check the tanks when servicing the meters or installing new service and if the dielectric fittings are not present they will not turn the water on until it is corrected.
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No kidding, Like I said a male copper MIP fitting connected into the tank will last for years and years without any problems at all and still will be removable to use over if you wanted to do so.
We usually cut the copper and leave them in so we have a couple of tubes on top to use for handles but I have removed the old ones and used them over again many times.
Our water meters are outside and plumbers install the service lines so unless we call them to locate a curb stop for us, about all we ever see of the water company is an occasional meter reader.
The two internally lined steel nipples that come shipped in our water heaters are just "check valves" of sorts that still conduct electricity.