HD Series, Flangefit, 430 Grade Stainless Steel Blades, Hand Operated

The HD-LL Series Low Leakage Damper is designed for air conditioning and ventilation systems requiring air control and low closed blade leakage performance.

It is ideal for environments where maintaining low leakage is critical, ensuring smooth airflow and minimal pressure drop, making it an ideal choice for larger more robust applications, such as data centres.

Suitable for velocities up to 20 m/s and duct Pressure to 2000 Pa, conforming to DW144 and Eurovent 2/2 classes A-C.

The HD-LL Series Air Control Damper, is available with square or rectangular flanged or spigoted connections and features a 100mm wide extruded aluminium control blade incorporating an engineered blade edge and side seals ensuring good sealing with minimal torque.

• Suitable for velocities up to 20 m/s and duct Pressure to 2000 Pa, conforming to DW144 and Eurovent 2/2 classes A-C.
• Control is either manual, specified Belimo actuators, or extended spindle control, allowing on-site conversion without special tools.
• Flanged single section sizes from 100mm x 100mm up to 1000mm x 1000mm with single drive mechanism.
• Spigoted single section sizes from 100mm x 100mm up to 1000mm x 1000mm case sizes single drive.
• Circular spigoted single section sizes from 100mm dia up to 1422mm dia one drive.
• Multiple section spigot square/rectangular dampers available either for site assembly or factory assembled.
• The aerodynamic aluminium reinforced blade, blade end cap and vertical side blade end seals provide air control, system balancing and low closed blade leakage.

For further technical information please see below.