{"data":{"id":"us/42-cfr-84.93","jurisdiction":"us","citation":"42 CFR 84.93","heading":"Gas flow test; open-circuit apparatus.","body":"(a) A static-flow test will be performed on all open-circuit apparatus.\n(b) The flow from the apparatus shall be greater than 200 liters per minute when the pressure in the facepiece of demand-apparatus is lowered by 51 mm. (2 inches) water-column height when full container pressure is applied.\n(c) Where pressure demand apparatus are tested, the flow will be measured at zero gage pressure in the facepiece.\n(d) Where apparatus with compressed-breathing-gas containers are tested, the flow test shall also be made with 3,450 kN/m. 2 (500 p.s.i.g.) container pressure applied.","path":["Title 42—Public Health","CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER G—OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES","PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES","Subpart H—Self-Contained Breathing Apparatus"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-42.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:11Z","sha256":"1f17e3afb3ab842792fceeeb2fa534908d2ef1f87a486a3ae8b5cc6e93419119","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-84.92","next":"us/42-cfr-84.94"},"notice":"GroundRules: Original legal text. Not legal advice."}