If residential pressure exceeds 80 psi, what is required?

When residential water pressure exceeds 80 psi, it is essential to install a pressure reducing valve (PRV). The primary function of a PRV is to manage and reduce the incoming water pressure from the main supply line to a safe and manageable level for household plumbing systems.

Excessively high pressure can lead to various issues, including leaks, bursting pipes, and damage to fixtures such as faucets and toilets. By installing a PRV, homeowners can ensure that the water pressure is regulated, typically between 40 to 60 psi, which is the recommended operating range for most plumbing systems. This not only helps protect the plumbing infrastructure but also conserves water and enhances the performance of appliances connected to the system.

The other choices do not directly address the concern of high water pressure. A water heater does not have a pressure regulation function, a booster pump is used to increase pressure rather than decrease it, and a secondary tank is typically used for storage or specific applications, not for managing pressure directly.