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Check valves
Rear back pressure dampers for installation in the LBR hopper
Description
A welded construction made of blue-painted Nederman steel plate with a durable rubber gasket. The QF type is mounted using a galvanized QF nipple, complete with a galvanized flange. For dimensions of QF edges, flanges, etc., please refer to the technical data sheets for QF duct systems and duct systems with flanges, respectively.
Characteristics Models Back Pressure Flap QF Ø 200 For Bottom Inlet, Vertical ArtNo: 7943931 diameter (mm) 200 Connection QF Back Pressure Flap QF Ø 250 For Bottom Inlet, Vertical (inner part + extension) ArtNo: 7943932 diameter (mm) 250 Connection QF Back Pressure Flap QF Ø 315 For Bottom Inlet, Vertical ArtNo: 7943933 diameter (mm) 315 Connection QF Back Pressure Flap QF Ø 350 For Bottom Inlet, Vertical ArtNo: 7943934 diameter (mm) 350 Connection QF Back Pressure Flap QF Ø 400 For Bottom Inlet, Vertical ArtNo: 7943935 diameter (mm) 400 Connection QF Back Pressure Flap QF Ø 450 For Bottom Inlet, Vertical ArtNo: 7943936 diameter (mm) 450 Connection QF Back Pressure Flap QF Ø 500 For Bottom Inlet, Vertical (internal part + extension) ArtNo: 7943937 diameter (mm) 500 Connection QF Back Pressure Flap QF Ø 560 For Bottom Inlet, Vertical ArtNo: 7943938 diameter (mm) 560 Connection QF Back Pressure Flap QF Ø 630 For Bottom Inlet, Vertical (inner part + extension) ArtNo: 7943939 diameter (mm) 630 Connection QF Back Pressure Flap FL Ø 200 For Bottom Inlet, Vertical ArtNo: 7943940 diameter (mm) 200 Connection FL Back Pressure Flap FL Ø 250 For Bottom Inlet, Vertical ArtNo: 7943941 diameter (mm) 250 Connection FL Back Pressure Flap FL Ø 315 For Bottom Inlet, Vertical ArtNo: 7943942 diameter (mm) 315 Connection FL Back Pressure Flap FL Ø 350 For Bottom Inlet Vertical ArtNo: 7943943 diameter (mm) 350 Connection FL Back Pressure Flap FL Ø 400 For Bottom Inlet Vertical ArtNo: 7943944 diameter (mm) 400 Connection FL Back Pressure Flap FL Ø 450 For Bottom Inlet Vertical ArtNo: 7943945 diameter (mm) 450 Connection FL Back Pressure Flap FL Ø 500 For Bottom Inlet Vertical ArtNo: 7943946 diameter (mm) 500 Connection FL Back Pressure Flap FL Ø 560 For Bottom Inlet Vertical ArtNo: 7943947 diameter (mm) 560 Connection FL Back Pressure Flap FL Ø 630 For Bottom Inlet Vertical ArtNo: 7943948 diameter (mm) 630 Connection FL Back Pressure Flap FL Ø 710 For Bottom Inlet Vertical ArtNo: 7943949 diameter (mm) 710 Connection FL Back pressure flap SP ø200 for hopper inlet vertical, in endpanel ArtNo: 5502898 diameter (mm) 200 Connection Spiro Back pressure flap SP ø250 for hopper inlet vertical, in endpanel ArtNo: 5502899 diameter (mm) 250 Connection Spiro Back pressure flap SP ø350 for hopper inlet vertical, in endpanel ArtNo: 5502901 diameter (mm) 350 Connection Spiro Back pressure flap SP ø400 for hopper inlet vertical, in endpanel ArtNo: 5502902 diameter (mm) 400 Connection Spiro Back pressure flap SP ø450 for hopper inlet vertical, in endpanel ArtNo: 5502903 diameter (mm) 450 Connection Spiro Back pressure flap SP ø500 for hopper inlet vertical, in endpanel ArtNo: 5502904 diameter (mm) 500 Connection Spiro Back pressure flap SP ø560 for hopper inlet vertical, in endpanel ArtNo: 5502905 diameter (mm) 560 Connection Spiro
