Medical Gas Piping

Medical gas systems include

• compressed air - medical and surgical
• compressed air - high pressure instrument
• compressed air - laboratory
• compressed air - dental
• oxygen
• nitrous oxide
• carbon dioxide
• nitrogen
• vacuum - surgical/medical
• vacuum - waste anesthesia gas disposal (WAGD)
• vacuum - laboratory
• vacuum - dental

Compressed Air - Medical and Surgical

• Common delivery pressure: ~ 50 psig (~ 3.5 bar)

This is low pressure dedicated system not allowed for other use than medical and surgical.

Compressed Air - High Pressure Instrument

• Common delivery pressure: ~ 120 psig (~ 8 bar)

This is a high pressure system providing compressed air to pneumatic equipment.

Compressed Air - Laboratory

• Common delivery pressure: ~ 30 psig (~ 2 bar)

Compressed Air - Dental

• Common delivery pressure: ~ 90 psig (~ 6 bar)

Oxygen

• Common delivery pressure: ~ 50 psig (~ 3.5 bar)

Nitrous Oxide

• Common delivery pressure: ~ 50 psig (~ 3.5 bar)

Carbon Dioxide

• Common delivery pressure: ~ 50 psig (~ 3.5 bar)

Nitrogen

• Common delivery pressure: ~ 160 psig (~ 11 bar)

Vacuum - Surgical and Medical

• Common vacuum pressure: ~ 50% (15 inc mercury gauge, 500 mbar abs)

Vacuum - Waste Anesthesia Gas Disposal (WAGD)

• Common vacuum pressure: ~ 50% ( 15 inc mercury gauge, 500 mbar abs)

Vacuum - Laboratory

• Common vacuum pressure: ~ 50% ( 15 inc mercury gauge, 500 mbar abs)

Vacuum - Dental

• Common vacuum pressure: ~ 50% ( 15 inc mercury gauge, 500 mbar abs)

Reference - NFPA 99: Health Care Facilities

Temperature ^oC
K
^oF

Length m
km
in
ft
yards
miles
naut miles

Area m²
km²
in²
ft²
miles²
acres

Volume m³
liters
in³
ft³
us gal

Weight kg_f
N
lbf

Velocity m/s
km/h
ft/min
ft/s
mph
knots

Pressure Pa
bar
mm H₂O
kg/cm²
psi
inches H₂O

Flow m³/s
m³/h
US gpm
cfm