A nitric oxide delivery device is provided that can be formed as a module that is insertable in a mating equipment bay in a gas delivery system found in one location, removed and used in conjunction with a transport gas delivery system when the patient is transported, and thereafter inserted in the equipment bay of a gas delivery system located at a second location. In a preferred embodiment, the device includes a housing having an NO supply port, an NO delivery port, a flow sensor port, and a conduit pneumatically connected to the NO supply port and the NO delivery port. A selector valve is positioned in the conduit and selectively moves between a first position wherein the NO supply port is pneumatically connected to the NO delivery port and a second position wherein the NO delivery port is pneumatically connected to a temporary supply of NO. The housing further has a power supply port, a temporary power source and a switch being selectively movable between a first position wherein power is provided to the NO delivery device via the power supply port and a second position wherein power is provided to the device from the temporary power source.