Swivel Disconnect™ Oxygen Thread DISS fittings are a reliable, ball-seat construction disconnect system with no springs, gaskets or O-rings. Swivel Connectors are specialized fasteners that provide the ability to allow movement or rotation between two parts or components while they are joined together. These connectors allow a certain flexibility and mobility in the connection, which can be an advantage in different applications.
Diameter-Index Safety System (DISS) connectors are threaded and have a unique diameter for each type of gas to prevent accidental hookup of the wrong gas. These specific diameters act in a key-like fashion so that fittings within the gas service “family” will connect only with their own “family members.” In place of diameter indexing, Oxygen (DISS 1240) has been assigned the long-established 9/16″-18 thread connections as its safety standards.