DAMPER BUTTERFLY VALVES - Size: from 3'' to 48'' - Rating: from PN 2,5 (others upon request) - Types of end connection: wafer (other connections upon request); - Materials: GG25 + Ni + Cr (all materials upon request); - Applications: in all plants where a regulation of high temperature fumes is requested. Thanks to its firesafe design and materials this range of valves can work from -40°C to +700°C. They can also close the passage of fumes with a minimum leakage. By choosing the suitable materials these kind of valves can work also with acid fumes. Damper valves can be realised with single or double rammer and they can be requested with holes for connection PN 2,5, PN 6, PN 10 and PN 16.