Universal Inline Pressure Valve for CPAP Machines

This Pressure Valve is a spring-loaded valve that helps prevent the back flow of oxygen or water from a breathing tube back into a CPAP or BiPAP machine when the machine is turned off. Any back flow of oxygen or water passes out of the circuit through vents in the valve. When the CPAP machine is operating, the valve allows air to flow normally through the patient circuit; but when the pressure is eliminated the valve seals to prevent backflow.