Klimapartner Neverest RKI 100 mm - Non-Return Air Valve with Internal Seal for Air Ducts Ventilation to Insert Indoors

Klimapartner Neverest RKI 100 mm - Non-Return Air Valve with Internal Seal for Air Ducts Ventilation to Insert Indoors

Q: How much pressure does it take to open? No rating is given (in comparison, the expensive Aldes brand gives 0.04 to 0.08 in. w.g.)

Thank you for your question. Ive uploaded a graph, in metric, which hopefully you can use if your aware of your ventilators specs. It can be found under the product pictures. Otherwise you need 10 pascals to open the vent in a 4 inch duct. The spring is relatively strong on our RKI series the RK series has a weaker spring. Because the RKI has a stronger spring we suggest it be installed after the ventilator with the flaps opening away from the ventilator. Hope this helps klimapartner

Q: In a *horizontal* duct installation, is there an optimal orientation for the spring/blades? (e.g., orient spring horizontally or vertically)? Thanks.

Thank you for your questoin. If you install the damper parallel, horizontal, to the ground it doesnt matter which way the sping/blades are. If you intsall the backdraft shutter vertically you want the blades/springs perpendicular to the ground. For further questions please dont hesitate to ask. sincerely, klimapartner

Q: My vent lines are already merged below the roof, to a 90° 4" vent roof pipe cover. Will your cover work for me? My old flapper broke.

Thank you for your question. Yes our backdraft shutter will work for you as long as you have a strong enough ventilator to push it open from that distance. The springs are stronger on the RKI then our RK model. If you install, which we recomend, the shutter right behind your ventilator you will not have any problems. The joy of the RKI series is that you can order it, install it without much hassle and if it doesnt work send it back. The RK 4 inch series https://www.amazon.com/dp/B011INHF5A has a weaker spring. This would also work and you need to connect it between two ducts. sincerely team klimapartner

Q: Go a kitchen exhaust should this be installed close to the fan or closer to the exterior wall.

If your goal is keeping the cold or hot air out of the house, it should be installed near the exterior wall of house. It will attract less grease build up the further away from hood and it will be easier to service or clean if you can access it from the outside rather than opening up interior walls.

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Product ID: 296832555

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Details

Material
Metal
Brand
Klimapartner
Exterior finish
Stainless
Inlet connection size
4 Inches
Inlet connection type
Slip fit

🌀100 mm DN metal pipe fit

🔄Automatic open/close reflux damper

⚙️Strong spring, 15 Pa opening pressure

Frequently Bought Together

neverest® RKI 4“ - Backdraft Damper Shutter Inline for 4 Inch Dryer Duct for Retrofitting 4 Inch Ducting Prevents Unwanted Drafts in Metal Ducts in Line Draft Blocker - Fits Only with Metal Ducts

EesTeck 4" (Diameter) Adjustable 304 Stainless Steel Duct Clamps Hose Clamp Pipe Clamp Air Ducting Clamp worm drive hose clamps (4Pcs, 91mm-114mm)

4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Description

🛠️ Elevate your airflow game with precision and style!

DURABLE QUALITY - Crafted from premium metal and compliant with DIN EN 12237 & DIN EN 1506 standards for lasting performance.
POWERFUL PRECISION - Equipped with a robust spring requiring just 15 Pa to activate, ensuring reliable airflow control.
SEAMLESS INTEGRATION - Retrofit-ready design fits entirely inside ventilation ducts for a sleek, invisible upgrade.
FLEXIBLE INSTALLATION - Supports both horizontal and vertical mounting, adapting effortlessly to your ventilation setup.
VERSATILE COMPATIBILITY - Perfectly engineered for all DN 100 metal pipes, supporting kitchen fans, bathroom extractors, and more.

The Klimapartner Neverest RKI 100 mm is a high-quality non-return air valve designed for DN 100 metal ventilation pipes. Featuring a strong internal spring and automatic reflux damper, it ensures efficient airflow control by preventing backdrafts. Suitable for retrofit installations, it supports both horizontal and vertical mounting and meets rigorous DIN EN 12237 and DIN EN 1506 standards, making it ideal for powerful kitchen and bathroom fans.

Specifications

Manufacturer	neverest
Part number	4054503017276
Item Weight	100 g
Item model number	neverest RKI 4
Size	100 mm
Color	Black/Silver
Material	Metal
Item Package Quantity	1
Specification met	DIN EN 12237, DIN EN 1506
Specific uses	china
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

How much pressure does it take to open? No rating is given (in comparison, the expensive Aldes brand gives 0.04 to 0.08 in. w.g.)

In a *horizontal* duct installation, is there an optimal orientation for the spring/blades? (e.g., orient spring horizontally or vertically)? Thanks.

My vent lines are already merged below the roof, to a 90° 4" vent roof pipe cover. Will your cover work for me? My old flapper broke.

Go a kitchen exhaust should this be installed close to the fan or closer to the exterior wall.

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