11
Nitrous Oxide cylinders are blue.
Oxygen cylinders are green.
Pin index system is a method of pins accurately located on the face of the cylinder yoke and holes
accurately located on the cylinder shut-off valve, such that only cylinders of a specific gas will fit the
cylinder yoke for that specific gas. See Figures 23 and 24.
Assembly of “E” Size Cylinders to Portable Units with Cylinder Mounts (cont.)
B. CYLINDER MOUNTING (see fig 25)
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