This combination Filter/ Regulator minimizes space and piping by integrating the 2 units into one. Standard features include a relieving regulator, which can be quickly locked by pushing down on the adjustment knob. There are many options, which include gauges, auto-drain, metal bowl and covers, different set pressures, etc. The AW-A is part of the family of modular air preparation units and can be combined with other similar sized products. This series is available in three body sizes with piping from 1/8 to 3/4 in Rc, NPT or G thread types.