Respiratory Care Equipment and Supplies
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Common CGA Connections


Fits LARGE Cylinders CGA 540


Fits SMALL Cylinders CGA 870

Oxygen
Air
Carbon dioxide
Nitrogen
Nitrous oxide
540
346
320
580
326
  870
950
940
960
910


U.S. Medical Gas Color Chart

Oxygen
Air
Carbon dioxide
Nitrogen
Nitrous oxide
Suction
Evacuation (WAGD)
Helium
Green
Yellow
Gray
Black
Blue
White
Purple
Brown


Abbreviations

DISS
CGA
NPT
PTO
Diameter index safety system
Compressed gas association
National pipe thread
Power take off ( 50 psi valve )


Cylinder Size Chart


NPT Thread Size Chart


Type of Wall Outlets

The most popular quick connect in the hospital setting is OHMEDA. Push in to connect. 1/4 turn to release.

Next is CHEMETRON, Push in to connect. Press button on wall outlet to release.

Next is PURITAN BENNETT, Push in to connect. Press button on wall to release.

OXEQUIP, MEDSTAR, and SCHRADER are other less popular quick connects.

The DISS connection is very popular. Most therapists prefer the quick connect type because with the DISS you have to thread it on and it takes longer.