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A steam relief valve is a tool used for releasing pressure from home applicances, such as a water heater to avoid dangerous explosions or other dangerous things to happen. Here are some tips on installing a steam relief valve. 
More Instructions
1), Turn off your hot water heater before installing a steam valve. If you have an electric hot water heater, then simply involves unplugging it from the wall.
2), Turn off the main water source leading to the hot water heater.
3), Allow the hot water heater to sit for an hour, so that the steam inside of it cools completely.
4), Remove the steam relief valve that is installed on your water heater with the wrench. Turn the wrench counterclockwise to detach the steam relief valve.
5), Place a layer of sealant tape on the pipe threads of your new steam relief valve.
6), Screw the new valve onto the water heater with your hands.
7), Tighten the steam relief valve into place by turning it clockwise with the wrench.
8), Turn the new steam relief valve to the closed or off position. You can now reattach the water heater to its power or gas supply and turn on the water line leading into it.





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