HD Series Heavy Duty Air Control Damper
Verified by manufacturer 2 days ago
Flangefit
Flangefit
Heavy-duty air control dampers designed for use in HVAC systems with high air pressures and velocities.
Application
For internal use in buildings within HVAC systems where high air pressures and velocities are involved. Suitable for applications requiring low closed blade leakage characteristics.
Description
The HD series damper range offers blade profiles that provides air volume control through to low closed blade leakage characteristics, that have been designed for systems where high air pressures and velocities are involved.
The aerodynamic blade profile encourages smooth airflow offering minimal pressure drop. Side covers are fitted to the flanged case not only ensuring that the dampers meet Class C case leakage of DW144, but additionally safeguarding against hands and foreign objects being placed into the path of the moving linkage. Available in a range of different sizes and configurations.
Features and benefits:
- Standard case construction is galvanized mild steel.
- Four case configurations.
- Two blade profiles.
- Three control options.
- Enclosed drive mechanism out of airstream.
- Easy transition from manual control to motorized and conversely.
- Can be supplied with blades and case in Grade 430 and 316 stainless steel.
- Air control and system balance.
- Variable flange dimensions and casing depths.
- Stainless steel side seals option to order.
- Flanged case dampers include side covers enclosing the drive linkage ensuring Class C case leakage.
- Vertical blade support that complies with DW144 available.
Also available to specify separately are the HD-IB interlocking blade, and HD-LL low-leakage blade products.
General information
Color | Silver |
Finish | Galvanized Stainless steel |
Material | Steel Stainless steel Aluminium |
Shape | Rectangle Oval Circle Square |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | U90/140 Mechanical supply ventilation U9/313 Mechanical ventilation with heat recovery units U9/120 Mechanical ventilation with heat recovery systems |
Specification data - Volume control dampers
Classification data | |
Standards | Conforms to HVCA specification DW144. Case leakage A, B and C. Conforms to Eurovent 2/2 classes A–C |
Format | Opposed blades. Guidance for specification option: Standard. Parallel blades. |
Performance characteristics | |
Airflow range | Aerodynamic performance to EN 1751. |
Leakage class | Class 2. Guidance for specification option: To EN 1751. |
Casing leakage class | C. Guidance for specification option: With side covers. |
Operating temperature range | +5 to +70°C. |
Materials | |
Casing | 1.2 mm (18 swg) galvanized mild steel to BS EN 10346 specification DX 51D Z275. Guidance for specification option: Standard. Stainless steel type 1.4016 ferritic to BS EN 10088-2. Stainless steel type 1.4401 austenitic to BS EN 10088-2. |
Blades | Galvanized mild steel airfoil air control blades (G). Aluminium airfoil balance air control blades (A). Stainless steel airfoil air control blades (S). Guidance for specification option: Consult manufacturer for grade options and insert requirements. |
Control | |
Method | Extended spindle (E). Manual quadrant control (H). Electric actuator (M). Guidance for specification option: Consult manufacturer for options and insert required voltage/ model. |
Type | HD. |
Model | HD-LL-F. |
Dimensions | Guidance for specification option: Insert requirements:
|
Profile | HD Air Control blade. Guidance for specification option: Standard. HD Air Control Precision Rolled Mono Rib blade. |
Accessories | Grade 316 stainless steel blade and drive spindles. Guidance for specification option: Replaces standard galvanized mild steel tube. None. |
Sustainability data
Country of product manufacture | United Kingdom |
Material | Steel Stainless steel Aluminium |
Literature
HD Series Heavy Duty Air Control and Low Leakage Dampers Brochure
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