# -11 Emergency discharge control.

- **operation:** document
- **citation:** 49 CFR 178.337-11
- **title:** -11 Emergency discharge control.
- **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) Emergency discharge control equipment. Emergency discharge control equipment must be installed in a liquid discharge line as specified by product and service in § 173.315(n) of this subchapter. The performance and certification requirements for emergency discharge control equipment are specified
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-178-337-11.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-178-337-11.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-178-337-11
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-178.337-11
**body:**

(a) Emergency discharge control equipment. Emergency discharge control equipment must be installed in a liquid discharge line as specified by product and service in § 173.315(n) of this subchapter. The performance and certification requirements for emergency discharge control equipment are specified in § 173.315(n) of this subchapter and are not a part of the cargo tank motor vehicle certification made under this specification.

(b) Engine fuel lines. On a truck-mounted cargo tank, emergency discharge control equipment is not required on an engine fuel line of not more than 3/4 NPT equipped with a valve having an integral excess flow valve or excess flow feature.

[64 FR 28050, May 24, 1999]
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- **body characters:** 700