1″ FRL System w/ Galvanized Cage, 175 CFM Maximum Flow (Y005, F329-08FW, R378G & 4108W).  

The maximum flow is limited by the 4108W Lubricator.  If the Lubricator is removed, the maximum flow rate is 250 CFM. 

The minimum flow rate for the Lubricator is 30 CFM.