Air source treatment:OU series 1,Working pressure:0.5-12bar 2,Port size: ... /8,1/2,3/4,1" 3,Precisely regulator The OU consisted of OFR and OL,each unit can be ordered ... drops /1000L of the air is sufficient. Air Source treatment-OU (fiter+regulator+lubricator) Specifications: SizeMINIMIDIMAXIMediumCompressed airFeatures of structureSintered filter with ...