Product parameters | |
Brand | LONG DA |
name | 70℃ fire damper |
Material | Zinc-free galvanized sheet |
structure | Automatic integrated valve |
Valve body | According to the different shapes and processes, it is divided into two cases: welding and one-piece, and cold-rolled into a flute. |
blade | Hot rolled steel plate, cold rolled into corrugated shape. |
Temperature sensing element | Fusible alloy, 280℃ meets the requirements of GB15930-2007 |
Blade shaft and connecting rod | ∅11.7 Cold drawn round shaft, 24×3 stamping connecting rod |
Copper sets | Pure brass |
Executive agency | Three types: WSDc-fk, WSDc-K, SDc-K |