Diameter-Index Safety System (DISS) Wall Type Gas Ouelets are wall-mounted quick connect outlets which provide a means of connecting to medical gas piping system. DISS outlets are typically used in ceilings of operating rooms or in place of quick-connect outlets. Connection to outlet is by means of a nut and nipple. Gas-specific indexing to prevent accidental connection to wrong service is accomplished by a series of interference diameters. Features Meets the requirements of the latest NFPA99 and CGA Latch valve assembly is color-coded foe ease of gas identification and aesthetic appeal Universal rough-in assembly to accept quick disconnects or DISS front adapters can be interchanged at any time Accept only DISS style gas specific adapters Gas specific indexed prevents interchageability of gas service for safety 360° swivel inlet pipe for easy installation Threaded swivel-nut connection makeseasy to attach and use within minutes Cleaned for oxygen service 100% passed leakage and connector stability tests Available for O2, Air, Vacuum, N2O, WAGD and N2