{"data":{"id":"us/42-cfr-84.147","jurisdiction":"us","citation":"42 CFR 84.147","heading":"Type B supplied-air respirator; minimum requirements.","body":"No Type B supplied-air respirator shall be approved for use with a blower or with connection to an air supply device at positive pressures.","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 J—Supplied-Air Respirators"],"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":"7b69adeaac835678ff8d014cf93a02f4decb7cb7946c739bca61bd8d0e897c56","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-84.146","next":"us/42-cfr-84.148"},"notice":"GroundRules: Original legal text. Not legal advice."}