The oxygen concentrator compresses filtered, ambient air and sends it to the directional-solenoid valve. The valve then directs compressed air into one of two molecular sieve beds. These adsorb nitrogen at pressure but let oxygen pass. The oxygen-enriched gas then flows to a pressure-reducing valve and through a bacterial filter near the outlet fitting.
When the electricity of the solenoid valve is switched on, the electromagnetic force opens the pilot hole, and the pressure in the upper chamber drops rapidly, forming a high-pressure difference between the upper and lower part around the closed part.
When the power of the solenoid valve is cut off, the pilot hole is closed by the spring force. The inlet pressure through the by-pass hole rapidly forms a low and high-pressure difference around the closing valve.
BENONI offers a wide range of solenoid valves for the reliable control of air and oxygen flow in-home and portable oxygen concentrator applications. Our teams can customize these products into a solution that meets the requirements of your specific application.
Philips Respironics Valve Body
Philips Respironics Valve with Solenoids and Wires