// CODE SNIPPET
1305.1 Required Operating Pressures
Go To Full Code Chapter
Medical gas and vacuum systems shall be capable of delivering service in the pressure ranges listed in Table 1305.1.
| GAS SERVICE | ABBREVIATED NAME | COLORS (BACKGROUND/TEXT) | STANDARD GAUGE PRESSURE |
|---|---|---|---|
| Medical air | Med Air | Yellow/black | 50—55 psi |
| Carbon dioxide | CO2 | Gray/black or gray/white | 50—55 psi |
| Helium | He | Brown/white | 50—55 psi |
| Nitrogen | N2 | Black/white | 160—185 psi |
| Nitrous oxide | N2O | Blue/white | 50—55 psi |
| Oxygen | O2 | Green/white or white/green | 50—55 psi |
| Oxygen/carbon dioxide mixtures | O2/CO2 n% (n = % of CO2) | Green/white | 50—55 psi |
| Medical-surgical vacuum | Med Vac | White/black | 15 inch to 30 inch HgV |
| Waste anesthetic gas disposal | WAGD | Violet/white | Varies with system type |
| Other mixtures | Gas A% / Gas B% | Colors as above; major gas for background/minor gas for text | None |
| Nonmedical air (Category 3 gas-powered device) | — | Yellow-and-white diagonal stripe/black | None |
| Nonmedical and Category 3 vacuum | — | White-and-black diagonal stripe/black boxed | None |
| Laboratory air | — | Yellow-and-white checker board/black | None |
| Laboratory vacuum | — | White-and-black checkerboard/black boxed | None |
| Instrument air | — | Red/white | 160—185 psi |
For SI units: 1 pound-force per square inch = 6.8947 kPa, 1 inch of mercury vacuum (HgV) = 3.386 kPa
Upcodes Diagrams
Related Code Sections
1305.1 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Required Operating Pressures
DESIGNATION COLORS AND OPERATING PRESSURES FOR GAS AND VACUUM SYSTEMS [NFPA 99: TABLE 5.1.11]
GAS SERVICE
ABBREVIATED NAME
COLORS (BACKGROUND/TEXT ...
1308.1 Health Care Facilities and Medical Gas and Medical Vacuum Systems, Where Required
for the same gas at different operating pressures are required, separate pressure-regulating equipment, relief valves, and source shutoff valves shall ...
909.21.1.1 Fire Protection and Life Safety Systems, Use of Ventilation Systems
relationships as required in Section 909.21.1 during operation of the elevator shaft pressurization system ...
909.21.1.1 Fire Protection and Life Safety Systems, Use of Ventilation Systems
relationships as required in Section 909.21.1 during operation of the elevator shaft pressurization system ...
6.1.1 Systems and Equipment, Ventilation Upon Loss of Electrical Power
) (inpatient and outpatient only) Exception to 6.1.1: When an essential power system is not provided or required, operation
of space ventilation and pressure ...