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Most residential plumbing systems come equipped with a water pressure regulator (aka, a pressure reducing valve - PRV) to control the pressure of the water coming into the home. Without it, pipes could burst, fixtures could break, and faucets will probably leak.
The term water pressure regulator (often called a pressure reducing valve - PRV) typically refers to a specialized water pressure reducing valve attached to the main water line that reduces the pressure of the water as it enters the home before it reaches any faucets or appliances. Water pressure regulators are commonly made from brass and usually have an adjustable screw or bolt on the top that controls the amount of pressure allowed through the valve. Some PRV valves come equipped with gauges to monitor the amount of pressure.
Maintaining a suitable water pressure running through your home is essential for preventing damage to faucets and fixtures and avoiding leaks. Here’s what you need to know about adjusting your water pressure regulator: