# Maximum and minimum allowable operating pressure; Low-pressure distribution systems.

- **operation:** document
- **citation:** 49 CFR 192.623
- **title:** Maximum and minimum allowable operating pressure; Low-pressure distribution systems.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (a) No person may operate a low-pressure distribution system at a pressure high enough to make unsafe the operation of any connected and properly adjusted low-pressure gas burning equipment.

(b) No person may operate a low pressure distribution system at a pressure lower than the minimum pressure a
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-192-623.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-192-623.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-192-623
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-192.623
**body:**

(a) No person may operate a low-pressure distribution system at a pressure high enough to make unsafe the operation of any connected and properly adjusted low-pressure gas burning equipment.

(b) No person may operate a low pressure distribution system at a pressure lower than the minimum pressure at which the safe and continuing operation of any connected and properly adjusted low-pressure gas burning equipment can be assured.
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- **body characters:** 431