PSA Systems Expert associated with this product. send mail Phone Call Online Interview Share: Send to a Friend Description Technical Specifications Product videos PSA Systems Havayar Group consisting of the most skilful and experienced experts enjoys all variable demands for development and design of oxygen, nitrogen and hydrogen generators by using PSA method. Our products are presented according to ASME, DIN, EN and API and the European and IEC standards. Havayar Company is the exclusive agent of Oxymat Company of Denmark with respect to supply of PSA systems. Hydrogen generator comprises two tanks filled with Molecularsive and Active Alumina. When a path of gas passes through this generator, hydrogen is discharged from one of its tanks in form of gas while in another tank, gas is simultaneously revived simultaneous through decompression. This process is called “Pressure Swing Absorption.