Deposits of sludge formed by dirty, wet and oily airact as a drag on pneumatic cylinders so that the sealsand bearings need frequent maintenance. Operationis slowed down and eventually stopped. Moisturedilutes the oil required for the head and rod of an aircylinder, corrodes the walls and slows response. Thisresults in loss of efficiency and production.Moisture flowing to rubber diaphragms in valvescan cause these parts to stiffen and rupture.Moisture also can cause spools and pistons to pit.In high-speed production, a sluggish or stuckcylinder could create costly downtime. A clean,dry air supply