Joint instrument for fire resisting division complete penetration of refrigerant pipe arrangement

摘要

(57) Abstract Objective By installing this device in the fire-protection wall the fire-protection wallWith application of the joint of refrigerant pipe arrangement is made easy, obtaining the approval of the fire stationIt makes easy and it is possible to compact term of works. Constitution In iron flexible pipe 1 through copper flexible pipe 2,3 that tableIt covers the surface with cloth 4 of the metal and insulates. This orbicular metallic plateIn 6 it locks with welding through copper flexible pipe 2,3. Constructing thisIt penetrates completely to the fire-protection wall of the thing and paints and it installs by includingThing is featured.