Suitable for back pressure protection, for installation on tank outlets, pipes or shafts. Features All-round sealing as pipe or 4-sided sealing as frame from 200x200 to largest dimensions Welded pipe socket or frame Adjustable cover bearing on the socket, double joint bearing on the frame Ring profile seal attached by tension band, profile seal on the fastening flange Valve cover with reinforced ribs As simple cover version, floating hollow cover for filling with sand or cover with lever and weight. Downloads Document Type Specifications Declaration of conformity Leaflets Certifications ATEX declaration Penstocks(pdf 796,16 KB) ATEX declaration Flaps-Weirs(pdf 797,84 KB) PED WAGU Flap Valve(pdf 502,50 KB) WAGU®-GL or GK Penstocks(rtf 94,39 KB) WAGU®-GL or GK Penstocks(pdf 1,67 MB) WAGU Rueckstauklappe(pdf 333,09 KB)