The North American Industry Standard for oxygen fittings are called ‘CGA-540’ (Compressed Gas Assn. fitting No. 540). Aircraft with built-in oxygen systems do not usually use the heavy fittings, instead special lighter-weight fill fittings have been developed. We have transfiller fittings for easy refilling your built-in system from standard CGA-540 oxygen systems. The adapters shown are for the aircraft fillers. The (N) is for ‘Nipple’ and the (S) is or ‘Socket’ on the CGA-540 end. An industrial cylinder has a socket. Microparticle filters are used and an O-ring is on the 540 nipple for an airtight fit by hand.
TA-916-N transfiller adapter, adapts CGA-540 to the Scott fitting (9/16-18 threads). Commonly known as the Scott 26875, 5020-1Airline or AS1046 fitting. A nut and nipple is on the CGA-540 end to attach directly to cylinders.
