Japanese Standard Outlets are designed with non-interchangeable features to prevent mismatched connections with improper media. Outlet valve and its base are provided non-ino-interchangeable mechanism by the pin-guide. Color coding twist-release holder for specific gas identification. Accepts only Japanese gas specific adapter which can be easily and rapidly joined together by a single action of one or both hands without using of tools. Features Unique Pin-guide hole prevents interchanging of gas service Inspection valve allows removal of the housing and socket assemblies for maintenance without closing down the entire pipeline Twist release for smooth quit action Outlet valves are easily dismantled and disassembled for inspection and maintenance Color-coded for easy gas identification Swivel inlet pipe for easy installation 100% tested for gas leakage and connector stability Individually packaged provides proper protection during storage and transit Various configurations available to meet specific requirements Can be used on O2, Air, Vacuum and N2O gases Available in recessed wall, exposed wall and console type Wall, bed-head unit, power column mounting options available