Heavy Duty Dampers

The HD Series Multi-Leaf Volume Control Damper has been specifically designed for installation in systems where high air pressures and velocities are experienced.
Combined with a robust construction, the damper is suitable for use on air handling units.
Dampers for air control can be manufactured with a single drive to a maximum size of 2500mm wide x 2000mm High. where low closed blade leakage is required, the max. size with a single drive is 1000mm x 1000mm.
Manual Quadrant Control, Motor Option or 19mm dia. Extended Spindle for actuation by others are available as standard.

Unless stated otherwise, flange models suitable for class A & B of DW144, spigot models suitable for class A B & C. Conforms to HVCA specification DW144. Conforms to Eurovent 2/2 classes A - C. Independent performance tests for pressure drop, leakage and airtightness. Test reports 158 and 160 refer