To save space, the Piggyback filter/regulator combines a general purpose filter, regulator and lubricator into one unit. Complete unit comes pre-assembled with modular mounting bracket for extra convenience. 1.3 ounce quick release bowl and quarter turn drain allows easy maintenance. 71 SCFM flow capacity @ 90 PSI. 3/8" NPT(F) ports. | Ingersoll Rand 1/2" Piggyback Filter, Regulator, & Lubricator C38341-600-VS