BS 1319:1976

Foreword
Cooperating organizations
Specification
1 Scope
2 References
3 Construction
4 Cylinder outlet valves
5 Connecting yoke for pin-index valve
6 Basic dimensions for pin-index yoke-type valve
    connections
7 Permissible alternatives for the construction of
    pin-index yoke-type valve connections
8 Dimensions and positions of the holes and pins for
    yoke-type valve connections
9 Identification of cylinders
Appendices
A Recommendations for the care and handling of medical
    gas cylinders, valves and yoke connections
B British Standard colours for medical gas cylinders
C Safety in the use of medical gas cylinders
D Unit type storage rack for medical gas cylinders
Tables
1 Basic dimensions for pin-index yoke-type valve
    connections
2 Identification colours for medical gas cylinders
Figures
1 Valve spindle ends
2 Two-pin system
3 Single-pin system
4 First alternative
5 Second alternative
6 Outlet connection for oxygen
7 Outlet connection for oxygen/carbon dioxide mixtures
    (carbon dioxide not exceeding 7 %)
8 Outlet connection for oxygen/helium mixtures (helium
    not exceeding 80%)
9 Outlet connection for ethylene
10 Outlet connection for nitrous oxide
11 Outlet connection for cyclopropane
12 Outlet connection for helium and for helium/oxygen
    mixtures (oxygen less than 20 %)
13 Outlet connection for carbon dioxide and for carbon
    dioxide/oxygen mixtures (carbon dioxide exceeding
    7 %)
14 Outlet connection for medical air
15 Outlet connection for a special mixture of 50 %
    oxygen and 50 % nitrous oxide
16 Marking of contents, capacity and tare
17 Bull-nosed valve
18 Pin-index valve
19 Handwheel valve
20 Dust cap removed
21 Attachment of regulator or yoke
22 Opening of the cylinder valve
23 Tightening the gland nut
24 Securing of cylinders
25 Suggested unit type storage rack

Cylinders,their valve outlets and connections of the pin-index type. Appendices give recommendations for the care and handling of the equipment.