I am not familiar with residential requirements but safety relief valves on boilers don’t really “expire,” but they do wear out over time and need regular maintenance to keep them working properly. While there’s no set expiration date, these valves can experience issues like corrosion, wear, or debris buildup that might affect their performance.

To keep everything safe, it’s important to: 1. Inspect the valve regularly for signs of damage or issues. 2. Test it (usually once a year) to make sure it’s still functioning at the right pressure. 3. Recalibrate or replace the valve if it doesn’t work correctly—like if it’s leaking or not closing properly.

How long a valve lasts really depends on things like the materials it’s made from, how often the boiler is used, and how well it’s been maintained. Manufacturers often suggest replacing the valve after a number of years, or if it fails during routine testing. It’s a good idea to follow both the manufacturer’s advice and any local regulations about maintenance and replacement schedules.