Leaks in a duct system mean loss of capacity and undesirable noise. The duct system is manufactured with minor tolerances to ensure tight joints. Use of pull rings ensures that the duct line fulfils tightness class C, the best tightness class within industrial extraction.
Joint sealing compound or rubber flanges (EPDM) are recommended for flange assemblies to ensure tight joints. Correct assembly with sealing compound or rubber flanges will result in assemblies which fulfil the requirements for tightness class C in accordance with DS447.
The duct system is particularly well suited for the stricter requirements on cleaning the duct system, and for installation with the special requirements for explosion prevention in accordance with EU Directive 94/9 EC of 23 March 1994 (ATEX).
