Attributes . ASTM B75 Alloy C12200; Third-party Certified To NSF/ANSI 61 Annex G; ASME B16.22; MSS SP-104; MSS SP-109 (5" To 8"); NFPA 99 Health Care Facilities Gas And Vacuum Systems And The Compressed Gas Association, Pamphlet G4.1 (Medical Gas) . Names