Stainless steel shutter RRA series

double

DescriptionElectropneumatic guillotine dampers designed for control, shut-off and dosing of powder or granular materials. Compact footprint and a functional blade sealing system minimise product escape, ensuring duct closure except in the blade passage area.VersionsType SRRA: electropneumatic guillotine damperType TRRA: damper with oscillating shutter movement for dosingMaterials / executionsCarbon steelStainless steel AISI 304Stainless steel AISI 316ApplicationsPrevent product release to the environment except at the blade passageInstallation where vertical footprint must be minimised or where partial duct occlusion is not feasible (e.g. compared to butterfly valves)Dosing applications (TRRA with oscillating shutters)ComplianceMachinery Directive 2006/42/ECDirective 2004/108/EC (electromagnetic compatibility)ATEX Directive 2014/34/EU (potentially explosive atmospheres)Technical characteristicsBlade sealing system to reduce product dispersionIntegrated double inlet flangesNominal square sizes: from 150 mm up to over 1000 mmMaterials: carbon steel or stainless steel AISI 304 / AISI 316Functional variants: electropneumatic guillotine (SRRA) and oscillating shutter for dosing (TRRA)Technical drawing available (PDF)