Oxygen Enrichment Adapters allow you connect Oxygen to your CPAP Therapy. This adapter features a cap to cover the Oxygen port easily, if it is needed. This O2 Bleed-in Adapter will connect directly to your CPAP machine and and the CPAP tubing will connect to the other end of the adapter. How to Use If you are using Standard CPAP tubing, the oxygen bleed in adapter can be placed in-between your CPAP machine and your CPAP tubing.  Your oxygen tubing will connect to the Bleed-In Adapter. If you are using Heated CPAP tubing, the Oxygen Bleed-In Adapter will be placed between your CPAP mask and your CPAP tubing. Your oxygen tubing will connect to the Bleed-In Adapter.Read our FAQ for more information and photos showing how to use your Bleed Adapter. *Oxygen must be in Continuous Flow*