--- product_id: 472829555 title: "WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe" brand: "wecooper" price: "S/.185" currency: PEN in_stock: false reviews_count: 13 category: "We Cooper" url: https://www.desertcart.pe/products/472829555-wecooper-150mm-6-inch-connector-with-backdraught-shutter-non-return store_origin: PE region: Peru --- # 150mm (6 inch) precision fit One-way airflow with automatic backdraught shutter Galvanized steel & stainless steel durability WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe **Brand:** wecooper **Price:** S/.185 **Availability:** ❌ Out of Stock ## Summary > πŸš€ Elevate your airflow with precision and power β€” never let a cold draft sneak in! ## Quick Answers - **What is this?** WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe by wecooper - **How much does it cost?** S/.185 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/472829555-wecooper-150mm-6-inch-connector-with-backdraught-shutter-non-return) ## Best For - wecooper enthusiasts ## Why This Product - Trusted wecooper brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Noise-Reducing Seals:** Inner rubber and outer foam seals minimize noise and guarantee airtight operation. - β€’ **Seamless 150mm Integration:** Fits perfectly into standard duct pipes and flexible hoses for hassle-free installation. - β€’ **Versatile Application Range:** Ideal for tumble dryers, bathrooms, garages, air conditioners, cooker hoods, and ventilation systemsβ€”upgrade your airflow game. - β€’ **Robust Industrial-Grade Build:** Crafted from galvanized steel, aluminum blades, and stainless steel shaft for long-lasting performance. - β€’ **Smart One-Way Airflow Control:** Automatic backdraught shutter ensures air flows only outward, blocking cold drafts and improving energy efficiency. ## Overview The WeCooper 150mm (6 inch) Connector with Backdraught Shutter is a high-quality non-return damper designed for duct and flexible hose connections. Featuring a galvanized steel casing, aluminum blades, and stainless steel shaft and spring, it ensures durability and reliable one-way airflow. Its automatic folding valve blocks cold air infiltration while reducing noise through inner rubber and foam seals. Perfect for use in ventilation systems, tumble dryers, air conditioners, and more, this connector offers a professional-grade solution to optimize airflow and energy efficiency. ## Description Insert check valve DN 150 mm extractor. Especially suitable for plugging 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 airflow in one direction, preventing cold air from entering. When the blind is mounted, the flap leaves open only in the direction of the outflowing air. The shaft axle must be vertical when installing the backflow flap and best 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 channel, but for a flexible duct, you need to use steel pipe clamps to secure the check valve. You can't go wrong with purchasing this slide-in backflow flap. Please contact us directly if you have any questions. We will reply within 2 hours. Review: Dimensions as described, performs very well - Very well made, all dimensions correct, perform perfectly ( although I'm using it with AEG kitchen hood which in full trhotle pumps 700 cubic meters of air per hour, on lowest settings probably about 150 ) with it works perfectly.Spring holding back draft flap is quite strong, than if someone going to use it with not as such powerful units (like washing air dryers etc) might not be suitable, but it's just my guess, can't tell for sure, you need to baisycly try it. Review: Quality damper/NRV - Really like the quality of the WeCooper range of dampers and NRV. I use these when I can and have 3 In use personally. Unfortunately, I wanted a 125mm dia, and couldn't locate this size in the WeCooper range. ## Features - Insert check valve DN 150 mm extractor. Especially suitable for plugging 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, block cold air into the pipe. When the blind is mounted, the flap leaves open only in the direction of the outflowing air. The shaft axle must be vertical when installing the backflow flap and best installed in a horizontal position and inserted completely into the pipe. This also applies to vertical installation - The casing 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 - You can't go wrong with purchasing this slide-in backflow flap. Please get in touch with us directly if you have any questions. We will reply within 24 hours ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09H5DR1R9 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 9,248 in DIY & Tools ( See Top 100 in DIY & Tools ) 19 in Ducting | | Certification | EN 1074, EN 1092 | | Colour | Silver | | Customer Reviews | 4.1 4.1 out of 5 stars (960) | | Date First Available | 26 Sept. 2021 | | Item Weight | 160 g | | Item model number | 700721629992 | | Manufacturer | WeCooper | | Material | Galvanized Steel Sheet, Aluminium, Stainless Steel | | Package Dimensions | 16.7 x 15.5 x 5.9 cm; 160 g | | Size | 6 inch | ## Product Details - **Brand:** WeCooper - **EU Spare Part Availability Duration:** 2 Years - **Exterior finish:** Galvanized - **Inlet connection size:** 5.9 Inches - **Inlet connection type:** Solvent - **Material:** Galvanized Steel Sheet, Aluminium, Stainless Steel - **Number of ports:** 1 - **Outlet connection size:** 5.9 Inches - **Outlet connection type:** G Connector - **Specification met:** EN 1074, EN 1092 ## Images ![WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe - Image 1](https://m.media-amazon.com/images/I/51SrnFkhhoL.jpg) ## Questions & Answers **Q: Does this damper fit completely inside the duct or is it a coupler for attach duct on both ends ?** A: I would say that it’s a coupler for ducting. I placed mine inside the wall and attached ducting either end. **Q: Is it better to place this right before the fan or right after?** A: I don’t know if it will make any difference. I have positioned mine after the fan, only because of space restrictions. **Q: hello can this be fitted to a kitchen extractor fan ?** A: In my opinion it wouldn't fit a window extractor. However, if 100mm trunking is used on the fan exit I would think it will fit the internal trunking. **Q: We have an in-line fan with 100mm flexible ducts on both sides. Where is the best place to put this flap?** A: Without actually seeing the placement and type of ducting, place the flap as close as practical to the fan unit exit. I actually fitted mine to the exit side body of the fan. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Dimensions as described, performs very well *by G***G on 16 October 2025* Very well made, all dimensions correct, perform perfectly ( although I'm using it with AEG kitchen hood which in full trhotle pumps 700 cubic meters of air per hour, on lowest settings probably about 150 ) with it works perfectly.Spring holding back draft flap is quite strong, than if someone going to use it with not as such powerful units (like washing air dryers etc) might not be suitable, but it's just my guess, can't tell for sure, you need to baisycly try it. ### ⭐⭐⭐⭐⭐ Quality damper/NRV *by S***H on 8 January 2026* Really like the quality of the WeCooper range of dampers and NRV. I use these when I can and have 3 In use personally. Unfortunately, I wanted a 125mm dia, and couldn't locate this size in the WeCooper range. ### ⭐⭐⭐⭐ Good item let down by springs that are too strong *by L***. on 18 September 2025* Fits perfectly and mostly does its job but as others have said the springs are too strong so I recommend removing one of them being metal no doubt its durable and haven't really noticed any noise the seal is good and its as simple as pushing it in ## Frequently Bought Together - WeCooper 150mm - 6 inch Connector with Backdraught Shutter, Non-Return Damper Flap to Connect Duct Pipe or Flexible Hose Pipe - 150mm Pack of 2 Adjustable 140-160mm Stainless Steel Pipe Clamp Secure Hose Clip Inline Duct Extractor Fan Cooker Hood - Kair Plastic Ducting Pipe 150mm - 6 inch / 350mm Short Length -Rigid Straight Duct Channel --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/472829555-wecooper-150mm-6-inch-connector-with-backdraught-shutter-non-return](https://www.desertcart.pe/products/472829555-wecooper-150mm-6-inch-connector-with-backdraught-shutter-non-return) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-05-18*