AC20A-AC40A-B Series FRL Assemblies SMC’s AC-B series of filter regulator lubricators have been redeveloped and feature a double layer, transparent bowl for better level visibility and extended working life. Part of SMC’s modular air prep range the AC-B can be combined with other components such as a soft start valve and mist separators of similar body size to meet the requirements of most air preparation systems. These filter regulator lubricators are available in a selection of body sizes from 10 to 40 with piping from G1/8” to G1/2” (also available as M5x0.8). Various options are available including normally open or normally closed auto-drain function, round or square pressure gauges and panel mounting kits. Ideal for automotive, facility and machine manufacturing, these highly flexible F.R.L. units also feature interchangeable, modular mounting.