Galvanised steel ventilation damper RG

Adjustment of pressure in air duct branches (RG version). Finer adjustment than standard damper with RGP. Avoids full closure of a ductwork branch. Motor driven version. Class 4 upstream/downstream airtightness in accordance with EN 1571 up to 1500 Pa. Class C internal/external airtightness in accordance with EN 12237. Core and plates made of galvanised steel. RGP: perforated plate with 46% passage, Ø 5 holes. Adjustable, screw-lock handle. Upper jumper provides overlaid insulation. FIELD OF APPLICATION • RG: pressure regulation in aeraulic ductwork branches. • RGP: offers finer pressure regulation than a standard damper; avoids full closure of a ductwork branch. DESCRIPTION • Body and diaphragms made of galvanised steel. • RGP: perforated diaphragm with 40% open surface, Ø 5 mmholes. • Through shafts made of lexan M1 up to Ø 315, steel from Ø 355 to Ø 630. • Adjustable handle, lockable by screws. • Upper jumper allows for external insulation. • All RG/RGP volume dampers can be motorised with code 11055122 (see RGE). • Beyond Ø 630 mm, for reasons of mechanical resistance, provide for a CRG type volume control damper with connecting plates of the same Ø as the ductwork.