What is required for a water piping system with a pressure exceeding 80 psi?

What is required for a water piping system with a pressure exceeding 80 psi?

• A. Pressure Reducing Valve
• B. Backflow Preventer
• C. Vacuum Breaker
• D. Pressure Relief Valve

Answer: (A)

When water pressure on the main supply is too high, the system needs a device that actively reduces that pressure to a safe, usable level. A pressure reducing valve does exactly that: it sits on the incoming supply and lowers the downstream pressure to a regulation point, typically keeping it well below 80 psi. This protects pipes, fixtures, and appliances from stress and helps minimize water hammer. The other devices have different roles and aren’t meant to curb overall system pressure. A backflow preventer or a vacuum breaker protects against backflow contamination, not high pressure. A pressure relief valve is used on specific vessels or appliances, like a water heater, to relieve excess pressure within that vessel, not to regulate the entire water main. So the correct requirement for a system with pressure exceeding 80 psi is a pressure reducing valve.

When water pressure on the main supply is too high, the system needs a device that actively reduces that pressure to a safe, usable level. A pressure reducing valve does exactly that: it sits on the incoming supply and lowers the downstream pressure to a regulation point, typically keeping it well below 80 psi. This protects pipes, fixtures, and appliances from stress and helps minimize water hammer.

The other devices have different roles and aren’t meant to curb overall system pressure. A backflow preventer or a vacuum breaker protects against backflow contamination, not high pressure. A pressure relief valve is used on specific vessels or appliances, like a water heater, to relieve excess pressure within that vessel, not to regulate the entire water main. So the correct requirement for a system with pressure exceeding 80 psi is a pressure reducing valve.