Pressure-relieving valves are used for which outlets?

Pressure-relieving valves are used for which outlets?

• A. Any outlet that may have an outlet PSI greater than 100
• B. Every water faucet
• C. Outdoor sprinkler only
• D. Only at the main fire pump discharge

Answer: (A)

Pressure-relieving valves are placed on outlets where the downstream pressure could exceed a safe limit, typically around 100 psi. By opening or venting when pressure rises above that threshold, they protect piping, fittings, and devices from overpressure and potential damage. Therefore, any outlet that may see more than 100 psi needs a pressure-relief valve. The other options are overly narrow: not every water faucet requires a relief valve, outdoor sprinklers aren’t the only outlets that can experience high pressure, and it isn’t limited to the main fire pump discharge—pressure-relief valves can be used at multiple outlets as needed to control pressure.

Pressure-relieving valves are placed on outlets where the downstream pressure could exceed a safe limit, typically around 100 psi. By opening or venting when pressure rises above that threshold, they protect piping, fittings, and devices from overpressure and potential damage. Therefore, any outlet that may see more than 100 psi needs a pressure-relief valve.

The other options are overly narrow: not every water faucet requires a relief valve, outdoor sprinklers aren’t the only outlets that can experience high pressure, and it isn’t limited to the main fire pump discharge—pressure-relief valves can be used at multiple outlets as needed to control pressure.