Bullard Climate Control Cool Tube Assembly is suitable with W/88, CC20, GR50 and MB30 series respirators with compressed air. Cool tube assembly includes flow control valve that allows user to adjust cool air to meet the comfort requirements and 1/4" industrial interchange Hansen and compatible quick disconnect nipple. It contains leather heat shield and assorted belts. It has models AC1000, frigitron2000, Bullard ADP20, EDP30 free-air pumps and ACL99 respirators that is used for worker's efficiency and improves productivity in uncomfortably hot work environments and can be applicable with Bullard continuous flow hood/helmet style respirators. It is ideal for hot or humid environments and is approved by NIOSH standards.