Yes, a refrigerator water supply line typically requires a shutoff valve located behind it. The shutoff valve is used to control the water flow to the refrigerator's water dispenser and ice maker. It allows you to turn off the water supply for maintenance or in case of emergencies, such as a leak or when replacing the refrigerator.
Having a shutoff valve installed behind the refrigerator provides a convenient way to isolate the water supply without affecting the rest of the household's water system. This can be particularly useful if there is a need to repair or replace the refrigerator water line or if you want to turn off the water when the refrigerator is not in use for an extended period.
If you do not have a shutoff valve behind the refrigerator, it is recommended to have one installed by a professional plumber or a knowledgeable individual with plumbing experience. They can ensure that the valve is correctly installed and that the water supply line is properly connected to the refrigerator.