The air we breathe contains roughly 78% nitrogen, 21 % oxygen, .9% argon and the balance is other gases. The oxygen is separated from the air using PSA Technology. The process centers around a molecular sieve known as Zeolite.

The air we breathe contains roughly 78% nitrogen, 21 % oxygen, .9% argon and the balance is other gases. The oxygen is separated from the air using PSA Technology. The process centers around a molecular sieve known as Zeolite.

At high pressures the sieve adsorbs or attracts nitrogen, and at low pressures it desorbs or releases nitrogen. Thegenerator consists of two tanks filled with sieve. As high pressure air (about 70 psi) is introduced into the first tank, it passes through the sieve and nitrogen is adsorbed. The remaining oxygen and argon are piped to a buffer or storage tank.

Just before the first tank becomes completely saturated with nitrogen, feed air is redirected to the second tank which then repeats the above process. The first tank is then vented to atmosphere which allows the nitrogen to desorb or release from the sieve. To complete the regeneration of the first tank, a small amount of the oxygen is used to purge it. This process is completed over and over again until the demand for oxygen is met. Under normal operating conditions, which includes the use of clean dry air for separation, the sieve will last indefinitely.

Productivity of a PSA generator is dependent on the oxygen purity required. A generator can produce significantly more oxygen at 90% purity than it can at 95.4%, with a relatively small increase in feed air. By means of a PLC or some other microprocessor based controller, it is practical on larger generators for the user to change the swing cycles. Purity and flow levels can be selected and optimized based on changing demand variables.

FEIDA is one of the Chinese largest and most respected manufacturers of high quality HIGH PERFORMANCE BUTTERFLY VALVE for PSA Technology. We own and operate a valve factory and a foundry. One million life cycle HIGH PERFORMANCE BUTTERFLY VALVE and VALVE CASTING are core products of FEIDA especially the PSA HIGH PERFORMANCE BUTTERFLY VALVE. From Design, Engineering, Manufacturing, QC and After-sales services, FEIDA provides a Total Solution to our customers helping to give them a competitive advantage in the marketplace.

High-Tech equipped enables FEIDA products widely served in several TOP-END requirement fields such as NUCLEAR industry, Biopharmaceuticals industry, Semiconductor Manufacturing, etc.FEIDA VALVE is a top rated player in the pressure swing adsorption valve market. Anually, FEIDA VALVE produce and deliver at least 50000 set pressure swing adsorption valves to all over the world.