Critical performance criteria for oxygen concentrator compressors included low noise/vibration, long life, oil-free operation, light weight, low energy use, and ability to deliver precise flow and pressure. UN-60P-OXY Compressor for Oxygen，Pressure 2.5kgf/cm2 Flow 110LPM Feature：100% Oil-Free(no contamination), High flow rate, Low pressure capability, Low maintenance, Long product life, Low noise, Safety valves(If pressure exceeds the amount allowed by the pressure relief valve, the pressure relief valve will automatically open and release air until the pressure is reduced.) Application：Oxygenerator, Medical application, Water treatment,Pond and Lake management, Sewage aeration,Water Purification Systems, Aeration systems,Water sampling, other deep water applications.