The present invention is an adaptor for connecting a pressurized gas, such as an oxygen supply, to two different outlets, with each outlet connected to a different gas delivery device. Gas delivery devices include, but are not limited to a nasal cannula, a c-pap machine, a bi-pap machine, a bubbler, or a nebulizer. The adaptor is provided with a valve located within the adaptor that can be used to direct the gas from the gas supply selectively to one of the two different outlets, or alternately, to both outlets at the same time.