# -24 Tests of pressure relief valves.

- **operation:** document
- **citation:** 49 CFR 179.220-24
- **title:** -24 Tests of pressure relief valves.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** Each safety relief valve must be tested by air or gas for compliance with § 179.15 before being put into service.

[Amdt. 179-9, 36 FR 21343, Nov. 6, 1971, as amended at 62 FR 51561, Oct. 1, 1997]
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-179-220-24.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-179-220-24.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-179-220-24
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-179.220-24
**body:**

Each safety relief valve must be tested by air or gas for compliance with § 179.15 before being put into service.

[Amdt. 179-9, 36 FR 21343, Nov. 6, 1971, as amended at 62 FR 51561, Oct. 1, 1997]
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- **body characters:** 196