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I believe that the larger the hot water tank, the greater is the need for an expansion tank. Water expands as it is heated. This is why all hydronic heating systems require an expansion tank. A water heater would need expansion tank when a backflow preventer or check valve is installed in domestic cold water line directly after water meter. Some areas require backflow prevention, but not all. Have to check with local plumbing authority about that.
You must have a pressure relief valve. I believe it is code nationally. I don't think you can buy a hot water tank w/o one. Expansion tank needed also if water meter has backflow preventer, check with local water authority if it does.
In the same place the regular kilowatt hour meter was installed.
The meter has to be installed on the exterior using black steel pipe in the home.
To get a water meter installed you generally have to have someone install it for you, and you can either apply to have someone do that for you, or pay a professional to do it.
The world's first installed parking meter was in Oklahoma City, Oklahoma, on July 16, 1935
Not in North America. The electrical meter has to be in plain sight and accessible on the side of a home for the meter reader to access it. In commercial installations it can be in an electrical room but the key has to be accessible to the meter reader. This is usually done with a key lock box that is installed close to the door of the electrical room of which the meter reader has the only key.
unit of length close to a meter is decameter and decimeter ,that Is, dam and dm.
20mm per meter meter falling away from the outlet
No, a meter is one one thousandth of a kilometer.
They are very close. 1 meter is about 1.09 yards
In most cases you have to apply for a water meter from your local water utility company. Contact them and let them know that you will like for a water meter to be installed.