Volume flow rate balancing Type ASW Hit and miss dampers, made of sheet steel, for installa tion into rectangular ducts Hit and miss damper with airflow straighteners ■■ Nominal sizes 225 × 75 to 1225 × 325 mm ■■ Perimeter angle section frame

Volume flow rate balancing General information Page General information Function Technical data Specification text Order code Dimensions and weight Installation details Commissioning Basic information and nomenclature Application – Type ASW hit and miss damper for supply air and extract air – Adjustable segments for volume flow rate balancing – Airflow straighteners create a homogeneous and uniform airflow – For installation into rectangular ducts Parts and characteristics – Angle section frame – Hit and miss damper for flow adjustment – Airflow straighteners on the hit and miss damper elements...

Volume flow rate balancing ① Hit and miss damper, blade for flow adjustment

Volume flow rate balancing Technical data Nominal sizes

Volume flow rate balancing Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme. Damper units, rectangular, made of galvanised sheet steel, for supply and extract air. Installation preferably in rectangular ducts. Ready-to-install component which consists of an angle section frame and hit and miss damper elements with airflow straighteners for flow adjustment and for achieving a uniform air discharge. Materials and surfaces – Angle section frame and hit and miss damper elements...

Volume flow rate balancing Order code  Type ASW Hit and miss damper Order example: ASW/625×225 Nominal size

Volume flow rate balancing The weight table shows the available nominal sizes

Volume flow rate balancing Installation details Installation and commissioning – Installation preferably in rectangular ducts – Fix the angle section frame with screws or rivets

Volume flow rate balancing Volume flow rate balancing When several ventilation grilles are installed on the same duct, it may be necessary to balance the volume flow rates. – Damper unit with hit and miss damper, adjustable, secured with a locking screw Volume flow rate balancing -S

Volume flow rate balancing Basic information and nomenclature Principal dimensions Nominal height of the ventilation grille L [mm] Nominal length of the ventilation grille Nomenclature LWA [dB(A)] Sound power level of the air-regenerated noise  [m³/h] and [l/s] Volume flow rate Δpt [Pa] Total differential pressure lS [m] Distance from single grille or horizontal run section (throw distance)