PWII Multi-blade dampers
PWII multi-blade dampers with backward blades are designed for air flow adjustment or closing in rectangular ventilation ducts. PWII multi-blade dampers with backward blades are designed for air flow adjustment or closing in rectangular ventilation ducts. They can be installed in air handling units or in a wall. Operating temperature: -20°C to +90°C, (+50°C for the actuator version).
PWII dampers have Sanitary Certificate no. HK/K/0841/03/2017.
Thanks to their versatile design, PWII dampers can be made of a variety of materials. PWII-O dampers have housings and shutters (lamellas) made of galvanised steel profiles. PWII-U dampers have housings made of galvanised steel sheet and shutters (lamellas) made of aluminium profiles with edge seals.
PWII-N and PWII-M dampers have housings and shutters made of stainless steel sheet, with M-type lamellas fitted with edge seals.
PWII-U, and PWII-M dampers, having edge seals on lamellas, can be used in control and shut-off applications, while the other ones mainly for control.
All PWII dampers have a raised flange-shaped body (30 mm). Shutters are connected with bearings and gears made of PP polypropylene.
The design of PWII-O and PWII-N dampers ensures low air resistance when open, and the design of PWII-U, and PWII-M also guarantees tight sealing when closed. For A x B dimensions up to 1000 x 1005 [mm], the following is the standard damper size:
- A – any dimension,
- B – x 100 mm multiple + 5 mm.
A PWII damper may be adjusted to a manual or automatic (actuator) control system. The housing is made of galvanised or stainless sheet metal. It can be powder coated.
