Abstract: A desiccant dryer utilizes a desiccant containing canister, a housing substantially enclosing the canister and a tubular member mounted within the housing. The canister includes two concentrically-arranged and cylindrically-shaped inner and outer walls and two end walls positioned at opposite ends of the canister and which join the inner and outer walls. A quantity of desiccant is positioned within the space between the inner and outer walls, and the housing defines an inlet opening and an outlet opening for gas entering and leaving the dryer. The tubular member has an open end and a closed end and is supported within the housing so that its open end corresponds with the housing inlet opening and the closed end is positioned within the housing interior.