What is the primary function of a pressure-reducing valve in a plumbing system?

The primary function of a pressure-reducing valve in a plumbing system is to reduce incoming water pressure to a safe level. This is crucial for protecting the plumbing infrastructure, including pipes and fixtures, from damage caused by excessively high pressure. High water pressure can lead to leaks, burst pipes, and premature wear and tear on plumbing fixtures and appliances.

By regulating the pressure that enters the plumbing system, the pressure-reducing valve ensures that the water delivered is at a manageable level, promoting efficient water usage and increasing the longevity of the plumbing components. This function is particularly important in systems where the source water pressure is significantly higher than what is optimal for residential or commercial use.