NLD

NLD sealed damper is used for the industry place that require sealed strictly. The damper blade move from opposite direction,which is consist of aluminum and is hollow inside,
this design can decrease the leakage efficiently

Key Feature

NLD is manufactured according to DIN EN1751 standard. The damper has gear connection and shaft connection two methods. The normal temperature for gear connection is less than 80 degree

•The frame is galvanized steel plate, the valve plate is aluminum hollow airfoil blade, which is pulled by high strength aluminum alloy as a whole.
•Polyurethane foaming material can be filled in the middle to slow down heat conduction.
•EN1751 standard, the amount of vane leakage per unit area under different pipeline pressure.The NLD sealed damper meets the class 3 sealing standard.