Bullard Cool Tubes cool incoming air from breathing air sources by as much as 20-30° F (11-17° C). These cool tubes feature adjustable airflow control valves that allow the user to adjust the incoming air temperature to a level best suited to individual comfort. Bullard Cool Tubes include Models AC1000 (for use with compressed air), Frigitron2000 (for use with Bullard ADP20 and EDP30 Free-Air® Pumps) and ACL99 (for use with Lancer Series respirators). Accessories include leather heat shield and assorted belts.