Description The inner rubber seal slightly reduces the diameter of the flap. The housing of the flap is made of galvanized steel, the damper blades are in two parts and are made of aluminum, the axis and spring made of stainless steel. How it works The exhaust air is routed through the pipe and the flap to the outside as usual. When selecting the check valve, care should be taken as to whether the flap should be installed horizontally or vertically, because gravity may make it difficult to open the flap. Furthermore, there are back pressure flaps with strong and smooth-running spring. A smooth-running spring is recommended for horizontal installation and with less air flow, so that the damper blades can open more easily.
neverest RK 125 mm In-line Backdraught Shutter Vent for Extractor Fans with Foam Sealed
$49.99
- Backdraft Nominal width 125 mm (5 inch) (exact dimensions see drawing), Galvanized steel housing, Flap leaves made of aluminum, Axis and spring made of stainless steel, Back draught valve for insertion into ventilation pipes, Reduces noise due to internal rubber seal
- The backflow flap RK opens and closes automatically. It has a smooth-running spring and should therefore be installed horizontally or vertically only as an exhaust air flap.
- The damper blades open even at low air flow. The inner sound insulation strip prevents loud rattling when striking the damper blades.
- Backflow flaps prevent the ingress of cold air or wind through the ventilation pipe. Here, the flap is installed so that the damper blades open only in the outflowing air direction. This means that no (cold) air / wind can penetrate from outside through the ventilation duct.
- INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installation of the flap so that it can open and close optimally.
In stock
Additional information
| Weight | 0.181 kg |
|---|---|
| brand | Brand: neverest |
| dimensions | 8.8 x 12.5 x 12.5 cm |