Backdraft Damper Insert Backflow Valve DN 100 125 150 mm Backflow Flap Valve Insert in Ventilation Pipe (Short, 200mm 8 inch) by Amazon.co.uk

• Insert check valve, DN 200 mm, steam extraction. Particularly suitable for inserting into exhaust hose. Perfect for use in tumble dryers, bathrooms, garages, air conditioners, fans, cooker hoods, ventilation systems.

• The folding valve opens and closes automatically and allows only one air flow in one direction, preventing cold air from entering. The flap blades open only in the direction of the air flowing when the blind is mounted. The shaft axle must be upright when installing the backflow flap and preferably installed in a horizontal position and inserted completely into the pipe. This also applies to vertical installation.

• The housing of the flap is made of galvanised sheet steel. The valve blades are made of aluminium. Shaft and spring are made of stainless steel.

• The inner rubber seal is used for better tightness and noise reduction. The outer foam sealing strip ensures a good seal and fixation of the backflow flap in the channel. The flap valve can be inserted directly into a non-flexible metal or plastic duct, but for a flexible duct you will need to use steel pipe clamps to secure the check valve.

• We have a 24-month warranty. You can't go wrong by purchasing this slide-in backflow flap. Please contact us directly if you have any questions. We will reply within 2 hours.