The 125mm diameter Round Connector With Damper is manufactured from (white) High Impact Polystyrene and has a minimum free area of 11,500mm² and has male fittings for connection inside of the duct.
The DUCVKC353 is compliant with SAP Appendix Q Product Characteristics Database recommendations for duct sizes used with both extract and Mechanical Heat Recovery Systems.
DUCVKC353 is manufactured in compliance with Domestic Plastic Ductwork Specification DW/154 and does meet UL94HB flammability standard.
|Round System (mm)||125|
|Product Group||Plastic Ducting|
|Product Variety||With Damper|
|Spigot size (mm)||124|
|Packaged Weight (Kg)||0.074|
|Packaged Length (mm)||124|
|Packaged Width (mm)||62|
|Packaged Height (mm)||124|
|Temp Max (°C)||60|
|Temp Min (°C)||-15|
|Polypipe / Domus (similar)||594|
|Pressure Loss (Pa) 15 l/s||18.3|
|Pressure Loss (Pa) 30 l/s||31.5|
|Pressure Loss (Pa) 60 l/s||61.7|
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Hi, I have installed a 3m run of 125mm round ducting for a cooker hood. This has been terminated with a cowl and damper, but the wind runs across the damper making it open quite often, letting in draughts and street noise. Can this connector/ damper be used and will it work in the vertical position close to the extract unit where it can be accessed for cleaning purposes?
Thank you for your question. Yes this damper can be fitted in an vertical position.
Can this damper be reversed and used to prevent ingress of air until an adjacent kitchen extractor is turned on and then allowing air supply?
Hi, I bought this to fit vertically in pipework above my kitchen extractor fan. The purpose to blow open when the fan is on and then as I've read the flap then falls closed by gravity once the fan stops to stop any back smells coming through if you are connected to another system which I am. This vertical pipe runs into a horizontal tee piece. One end going to the outside and the other is an extractor in another room. My concern is that the flap doesn't seen to close with gravity. Even if I hold it in my hand and push the flap up it wont fall back into place. My worry is its not going to do the job I bought it for. Let me know what you think please
|Customers who bought this product also purchased|
|Ducting System||Actual dimensions (mm)||Space requirements (mm)||Airflow mm²|
For 4" (100mm) extractor fans or for low power cooker hoods up to 250m³/hour
|System 100 - Round||100||106||7,854|
|System 100 - Rectangular||110 x 54||116 x 60||5,940|
For medium extraction rates or if available depth is limited up to 500m³/hour
|System 125 - Round||125||131||12,272|
|System 125 - Rectangular||150 x 70||156 x 76||10,500|
For 6" (150mm) extractor fans or for high power cooker hoods up to 500m³/hour & above
|Megaduct 220 - Rectangular||220 x 90||227 x 97||17,968|
|System 204 - Rectangular||204 x 60||210 x 66||12,240|
|System 150 - Round||150||156||17,671|
|System 150 - Rectangular||180 x 90||186 x 96||16,200|
For a shallow space, such as ceiling voids or under floor, where high extraction rates are not needed:
|System 300 - Rectangular||308 x 29||314 x 35||8,932|
|System 225 - Rectangular||234 x 29||240 x 35||6,786|
| System 100 |
| System 125|
| System 150|
|System 204||System 225|
|System 220||System 300|
|Actual Dimensions (mm) Space Requirements (mm)|