Allegro 9873-50 One-Worker Panel Filter Kit
First stage: (Allegro p / N: 9873 - 31) 2 filters per kit, 5 micron coalescing filter element, removes water, oil and larger particles, replace every 200 hours of operation
Second stage: (Allegro p / N: 9873 - 32) 1 filter per kit, 0.0 10 micron filter element, removes the finest particles and contaminants and provides "oil-free" air, replace every 400 running hours
Third stage: (Allegro p / N: 9873-33) 1 filter per kit, 0.003 ppm activated carbon filter element, oil vapors, hydrocarbons and most air odors, replace every 400 running hours