--- product_id: 51173976 title: "Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22" brand: "mkk" price: "€ 13.47" currency: EUR in_stock: true category: "Mkk" url: https://www.desertcart.hr/products/51173976-ducting-pipe-non-return-valve-100mm-round-duct-rigid-tube store_origin: HR region: Croatia --- # Quick & easy installation Fits Ø100mm ducts perfectly Backdraft damper stops reverse airflow Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 **Brand:** mkk **Price:** € 13.47 **Availability:** ✅ In Stock ## Summary > 🚀 Stop airflow backdrafts before they start — upgrade your ventilation game! ## Quick Answers - **What is this?** Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 by mkk - **How much does it cost?** € 13.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/51173976-ducting-pipe-non-return-valve-100mm-round-duct-rigid-tube) ## Best For - mkk enthusiasts ## Why This Product - Trusted mkk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Designed for quick, tool-free fitting to save you time and hassle. - • **Reliable 2-Year Warranty:** Confidence backed by a solid manufacturer guarantee for peace of mind. - • **Backdraft Damper Technology:** Prevents unwanted airflow reversal, ensuring optimal ventilation efficiency. - • **Lightweight PVC Construction:** Durable yet easy to handle, reducing installation fatigue. - • **Precision Fit for Ø100mm Ducts:** Seamlessly integrates with standard round ducting for a flawless connection. ## Overview The KO100-22 Ducting Pipe Non Return Valve is a 100mm round PVC connector featuring a built-in backdraft damper to prevent reverse airflow. Lightweight and easy to install, it fits standard ducting perfectly and comes with a 2-year manufacturer warranty, making it a reliable choice for efficient ventilation systems. ## Description Shop Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22. Free delivery on eligible orders of £20 or more. ## Features - Connector fits into Ø100mm round pipe ducting - Equipped with a back draft damper for back flow prevention - Quick and easy fit - Lightweight Material: PVC ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00FCE0RSE | | Best Sellers Rank | 44,940 in Garden ( See Top 100 in Garden ) 1,231 in Garden Hose Parts & Connectors | | Brand | MKK | | Colour | White | | Connector Type | Plug | | Country of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (3,577) | | Exterior Finish | Glatte Kunststoffoberfläche | | Included Components | No | | Item Dimensions | 10 x 10 x 6 centimetres | | Item Type Name | Building material | | Manufacturer | Armar Trading LTD | | Manufacturer Warranty Description | 2 year manufacturer guarantee. | | Material | Polyvinyl Chloride | | Model Number | KO100-22 | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | A289a_SML | | Set Name | Small White | | Size | Klein | | Thread Size | M100 | | Thread Type | UN | | Unit Count | 1 unité | ## Product Details - **Brand:** MKK - **Colour:** White - **Connector type:** Plug - **Exterior finish:** Glatte Kunststoffoberfläche - **Item dimensions L x W x H:** 10 x 10 x 6 centimetres - **Material:** Polyvinyl Chloride - **Number of pieces:** 1 - **Size:** Klein - **Thread size:** M100 - **Thread type:** UN ## Images ![Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 - Image 1](https://m.media-amazon.com/images/I/410JRbLJ-6L.jpg) ![Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 - Image 2](https://m.media-amazon.com/images/I/21GyHRFfkpL.jpg) ![Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 - Image 3](https://m.media-amazon.com/images/I/41sAkEnY3NL.jpg) ![Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 - Image 4](https://m.media-amazon.com/images/I/21oxGGIT5lL.jpg) ![Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper KO100-22 - Image 5](https://m.media-amazon.com/images/I/21+ZIu88swL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Do this product have a spring to close the back shutter? Or does is use gravity to close it once the flow stops?** A: Gravity - it does rattle in the wind **Q: Can this be fitted on a 45 deg slop downwards to the outside vent and will it still work fully? Thanks** A: Oh not so sure it will stay closed at that angle. I have mine fitted on a flat surface and it works perfect. **Q: Is this product suitable for extracting cooking fumes and steam?** A: Hi I have used this item to prevent a back draught in ducting for an online bathroom steam extraction system. **Q: On an in-line fan. where is the best place to put one of these? before the fan or after? and does it go onto the fan spigots? or the end of the ducts?** A: It goes after the fan in the exhaust direction to prevent draughts returning through the vent back into the room/device being vented. It is designed to fit in line in the pipework and will need glueing into rigid pipework or securing with a large pair of jubilee clips into flexible pipes whether plastic or aluminium. You should find on a reasonable external vent kit that it also contains a non return flap, however if you're hooking up multiple rooms in series (i.e. on a single pipe), these also reduce the amount of noise which leaks through the vents ## Frequently Bought Together - Connector with Backflow Flap, Check Valve, Connector, Ventilation Pipe, Round Duct, Ventilation System, Pipe Connector, Diameter 100 mm, White - EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm) - AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/51173976-ducting-pipe-non-return-valve-100mm-round-duct-rigid-tube](https://www.desertcart.hr/products/51173976-ducting-pipe-non-return-valve-100mm-round-duct-rigid-tube) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-13*