Together with matching fittings and ducts, ventilation dampers
offer a complete system for building ventilation ductwork. The
wide range of types and versions allows adapting the damper
solution to virtually all design requirements.
All diameter sizes of round dampers match the SPIRAL®system
round fittings. Rectangular damper sizes need to be adjusted
to the dimensions of the ductwork and fittings installed. All
other sizes are shown in the tables and specifications in the
individual Product Data Sheets.
The SPIRAL®system round dampers made from
galvanized steel sheet are provided with the PZH-NIH Hygiene
Certificate No. HK/B/0867/01/2009.
Rectangular dampers are provided with the PZH-NIH Hygiene Certificate No.:
HK/B/0100/02/2009 (version in galvanized steel sheet);
HK/B/0101/01/2009 (version in stainless steel sheet).
