... , which is convenient, stable and economical PSA Oxygen making equipment Specification Model NoBGPOCapacity2~240Nm3/hPurity93±3%Initial Pressure0. ... . Under certain pressure, zeolite molecular sieve has different oxygen/nitrogen adsorption capacity, i.e. much more nitrogen ... ...etc.5. Customized equipment with pressure high upto 100bar, 120 bar, 150 bar, 200bar and 250 bar are available for cylinder ...