What do the numbers on a tire mean? The DOT number appears on the sidewall of all tires intended for sales in the U.S., and designates the location of manufacture, the week and year of production, and the specific tire.
Water heater anode rod or sacrificial anode is the important component part with only one purpose; to protect metal tank from corrosion. Use this article to learn how to replace the anode, installation tips, how it works, about different types and when to use each one.
If the appliance is gas-fired, set the control valve to the pilot setting. Next, shut the cold water supply valve to the heater, and drain off two gallons of water. Now you're ready to start on the repair. On the top of the water heater you should see a nut holding the anode in place. If you can't see it, look for a plastic cap, which will pry out easily to reveal it. Then, using 1-1/16 inch socket and breaker bar, back the rod out of the heater.