MULTI-BLADE DAMPER WITH A CIRCULAR CONNECTOR Characteristics: A rectangular multi-blade damper with a circular connector with backward or concurrent blades and used for airflow control or closing. Controlled manually or by an electric actuator. Intended Use PWR circular multi-blade dampers are used for precise airflow control or closing in circular ventilation ducts. Operating temperature: -20 °C to +90 °C, (+50 °C for the actuator version). The device holds hygiene certificate no. HK/B/1084/04/2012. PWR dampers are made on the basis of PW dampers. Therefore, PWR damper versions match the PW damper versions. A rectangular damper is equipped with circular connection pipes and adjusted for connecting with SPIRO systems. The design of the dampers ensures low air resistance when open and if dampers with blades with edge gaskets are selected, it ensures good tightness parameters in a closed position as well. Dimensions • PWII-U Shut-off damper (class 1 or 2) • PWII-O Control damper • PWII-N Stainless steel damper • PWIIS Airtight damper (class 2 or 4) • PWIIS-N Airtight damper (class 2 or 4) • PS Airtight damper (class 2) • PWO-O Control damper • PWO-N Stainless steel damper • PWW-U Shut-off damper (class 1) • PWW-O Control damper • PWW-N Stainless steel damper • T1 Damper with an actuator • T2 Damper with a manual mechanism • T3 Damper with an extended axle (for the actuator installation) Table 1. Standard dimensions of PWR-PWII-O-T2 dampers. Technical Data Due to using inserts coming from different types of dampers for constructing PWR dampers, nomograms and graphs appropriate for the specific insert used are applied to determine technical parameters. Multi-blade damper with a circular connector

When ordering, please provide information as follows: * Optional values, if not specified, the default values will be used Multi-blade damper with a circular connector