AIR PREPARATION BLOCK 1" AIR PREPARATION UNIT BLOCK FRL 1" Compressed air inadequately prepared is the most common cause of failure, which can effectively stop production and bring losses. Therefore, air preparation should be properly taken care of to get air of the right quality, preventing failures and using this ubiquitous medium without problems. The air preparation block is a combination of filter-reducer and lubricator. The air in the first phase goes to the filter, is cleaned of particles and a certain amount of water ( but not dried ), and then is enriched with oil mist. The reducer is used to adjust-set the appropriate pressure for the system. It is a simple and quick way to improve the quality of compressed air. manufacturer API → model 124.A14FRRL → connection size 1/4" → flow rate 500 l/min → P.max 10 bar → output pressure adjustment range 0.5-8.5 bar → filtration accuracy 25 µ (micron) → operating temperature range from 0 to 60 degrees C → pressure gauge connection 1/4"