{"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":null,"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.\n\n(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.\n\n[64 FR 28050, May 24, 1999]","truncated":false,"body_characters":700}