PWIIS-N Rectangular multi-blade special damper
Description
Rectangular multi-blade dampers with backward or concurrent blades used for airflow control or closing. Controlled manually or by an electric actuator.
Intended Use
They can be installed in air handling units or in a wall. The design of the damper ensures leakage class 2 or 4 in accordance with EN-1751. Special sealing inserts installed at the blade ends ensure high integrity. The respective blades are driven by the system of levers and tie rods in a backward arrangement.
Operating temperature: -20 °C to +90 °C, (+50 °C for the actuator version).
PWIIS-N dampers hold hygiene certificate no. HK/K/0841/03/2017.
Design
The housings and the blades of the PWIIS-N dampers are made of stainless sheet metal. Special inserts with a sleeve seal are installed at the ends of the blades. The blades are fitted over the entire length with EPDM gaskets. On two sides of the blade, inside the inserts, there are embedded steel axles connected with the blade by means of a steel rivet. The blades are provided with plain bearings made of fibreglass reinforced PP.
Manufacturing Versions
Drive:
- T1 – Damper with an actuator
- T2 – Damper with a manual mechanism
- T3 – Damper with an extended axle (for the actuator installation)
