Which part of a plumbing system prevents damage to pipes and fixtures by regulating water pressure?

The part of a plumbing system that is specifically designed to prevent damage to pipes and fixtures by regulating water pressure is the pressure regulator. This device is essential in managing and controlling the pressure of water flowing through the plumbing system. When water enters a home or building, it can sometimes arrive at a pressure that exceeds what the plumbing fixtures and pipes can safely handle. Too much pressure can lead to leaks, pipe bursts, and even damage to appliances that rely on water, like dishwashers and washing machines.

A pressure regulator works by automatically adjusting the pressure of the incoming water to a set limit, ensuring that the water pressure remains at a safe and manageable level. This not only protects the integrity of the plumbing system but also enhances the efficiency and longevity of appliances and fixtures.

In contrast, options like a flow restrictor are intended to limit the amount of water that flows out of a fixture, which does not address pressure but instead manages flow rate. A safety valve serves to relieve excess pressure or prevent backflow in systems but is typically not used to proactively regulate incoming pressure. A water filter is dedicated to purifying water by removing contaminants and does not play a role in managing water pressure. Thus, the pressure regulator is the correct choice for its primary function in