Multi-leaf volume control dampers

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

• HD dampers have been specifically designed for installation in systems where high air pressures and velocities are experienced
• Suitable for use on air handling units

• Standard case construction is galvanised mild steel
• Three airfoil blade designs
• Four casing options
• Low and high pressure models
• Out of airflow linkage
• Easy conversion from manual to motorised or vice versa
• Can be supplied with blades and case in 316 or 430 stainless steel
• Balance and control dampers
• Infinite sizing capability
• Variable flange dimensions and casing widths
• Comprehensive control options
• Stainless steel side seals to order

• 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