Tramec’s System Saver 1200P Style (External Purge) air dryers bring affordability and convenience to the high-efficiency design the System Saver Style (External Purge) has long been known for. Featuring a durable aluminum base, spin-on cartridge and regen/purge port, Tramec’s System Saver Style (External Purge) air dryers give you the reliability and low-maintenance you expect.