NEN EN ISO 407 : 2004

Foreword
1 Scope
2 Normative references
3 Valve
4 Yoke
5 Basic dimensions
  5.1 General
  5.2 Pin-index yoke-type valve body
  5.3 Single-pin yoke-type valve connection system
  5.4 Two-pin yoke-type valve connection system with the
      pins in a single row
  5.5 Two-pin yoke-type valve connection system with the
      pins in a double row
  5.6 Basic dimensions
6 Requirements for alternative designs of yoke-type valve
  connections
  6.1 Requirements for the design of the connecting yoke
  6.2 Examples of alternative construction for the connecting
      yoke
7 Dimensions and positions of the holes and pins for yoke-type
  valve connections
  7.1 General
  7.2 Outlet connection with single-pin system
  7.3 Outlet connections with two-pin/single-row system
  7.4 Outlet connection with two-pin/double-row system

Concerns pin-index yoke-type valve connections for small medical gas cylinders, with a maximum working pressure (filling pressure at 15 degree C) of 200 bar. It specifies basic dimensions; requirements for alternative designs of the yoke-type valve connections and dimensions and positions for the holes and pins for the outlet connections.