AW Series of the Air Cooled Heat Exchangers / Oil Coolers by Ace are plate fin design oil coolers that can be used for offline and return line cooling of hydraulic systems. AW series heat exchangers are economical oil coolers recommended for small hydraulic power packs with installed motor capacity of up to 5 HP and pump flows of about 12 LPM (max return oil flow of 20 LPM should not be exceeded). These are also an ideal solution for drain line cooling of high pressure variable displacement pumps. Other applications include gearbox oil cooling & die cooling.