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1310.2.2 Drops to Individual Stations
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Drops to individual station outlets and inlets shall be not less than DN15 (NPS 1/2) (5/8 inch O.D.) size. [NFPA 99:5.1.10.11.1.4]
TABLE 1310.2.2(1)
MAXIMUM PERMITTED PRESSURE LOSS IN MEDICAL GAS AND MEDICAL VACUUM SYSTEMS
| TYPE OF SYSTEM | MAXIMUM ALLOWABLE SYSTEM PRESSURE LOSS (psi) |
|---|---|
| Medical Air | 5 |
| Nitrogen | 15 |
| Nitrous Oxide | 5 |
| Carbon Dioxide | 5 |
| Oxygen | 5 |
| Medical Vacuum | 4 inches of mercury |
For SI units: 1 pound-force per square inch = 6.8947 kPa, 1 inch of mercury = 3.386 kPa
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