1. LawStack
  2. Title 40 - Protection of Environment
  3. Chapter I - ENVIRONMENTAL PROTECTION AGENCY
  4. Subchapter C - AIR PROGRAMS
  5. Part 91 - CONTROL OF EMISSIONS FROM MARINE SPARK-IGNITION ENGINES
  6. Subpart E - Gaseous Exhaust Test Procedures
  7. 40 CFR § 91.425
40 CFR § 91.425
CVS calibration frequency
June 9, 2020
CFR

Calibrate the CVS positive displacement pump or critical flow venturi following initial installation, major maintenance or as necessary when indicated by the CVS system verification (described in §91.424(e)).

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§ 91.424 Dilute sampling procedure—CVS calibration
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§ 91.426 Dilute emission sampling calculations

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