No person shall perform medical gas and vacuum systems work unless such person has obtained a certificate pursuant to Section 20-334a of the CT General Statutes "Medical gas and vacuum systems work" means the work and practice, materials, instrumentation and fixtures used in the construction, installation, alteration, extension, removal, repair, maintenance or renovation of gas and vacuum systems and equipment used solely to transport gases for medical purposes and to remove liquids, air-gases or solids from such systems. https://portal.ct.gov/DCP/License-Services-Division/All-License-Applications/Licensing-for-Medical-Gas--Vacuum-Systems
