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Before you go to buy a new steam valve, you should figure out what size of steam valve you need first. A steam valve is a tool that makes steam to escape from a source so as to decrease the build up of pressure. In most cases, steam valves are attached to water heaters, but are also applied in industrial settings. It's necessary for you to get the basic knowledge about the size of the valve before you want to repalce a faulty steam valve or install a new one, for valves come in a variety of sizes.
More Instructions
1), Mark the pipe that you plan to attach the steam valve to.
2), Hold the ruler up to the opening of the pipe, being sure that its beginning edge is matched with the outer surface of the pipe. Also, be sure that you are holding the ruler at the center of the pipe's diameter.
3), Mark where on the ruler the other other end of the pipe's outer edge is located. Read how many inches wide the pipe is. This is the size of steam valve you will need to purchase to install on this pipe.
Tips
In the U.S.the steam valves for most water heaters measure either 3/4 inch or 1 inch.






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