
3D Models of Ventilation Valves and Duct Flaps
This collection gathers STL files for ventilation valves, including one-way check flaps, backdraft limiters and valves for fan or cabinet exhaust. It is useful when you need to control airflow in a duct or enclosure and want to adapt the part to your own pipe size. The models vary in diameter and mounting style, so you can compare options before printing. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.
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Polyzon compone questa raccolta a partire dai risultati di ricerca dei siti collegati. I doppioni e i modelli senza anteprima vengono rimossi, le corrispondenze deboli finiscono in fondo e il resto mantiene l’ordine dei risultati. I modelli appartengono ai rispettivi autori: verifica le condizioni sulla pagina di ciascun modello.
Criteri di selezione a cura della redazione di Polyzon · Testo aggiornato: 11/10/2026
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Tutti i modelli di questa raccolta

Air ventilation valve version 2
Aeration Butterfly Valve Dia 125 mm

Air Duct Valve for 120mm Fan for 3d Printer Cabinet Ventilation

air (ventilation) duct with a valve (for the thermal gap between the window and the wall)

Air System / Ventilation - Check Valve / Flap for 100mm / 4inch

chimney / Ventilation Valve

Backdraft Valve for Ventilation Pipe Ø100 mm

Air ventilation valve

Air Ventilation Check Valve / Zpětná klapka do ventilace 125mm

V2 - 22mm One Way Flow Restriction Valve for Multiple Patient Lung Ventilation
Valve exhaust blower motor in the bathroom V2

Ventilation Valve ceiling wall - 5MB

Check valve for ventilation (125 mm)

Ventilation check valve
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Вентиляционный клапан + решетка

Air Duct Cover ALL SIZES!

Air System / Ventilation - 100mm/4 Inch Exhaust Ventilation Limiter / Valve

ventilation valve

Ventilation_valve

Ø125 Ventilation one way air valve

Check valve for the ventilation system

Ventilation fan valve 100mm

Toyota Harrier/Lexus RX300 Headlight Ventilation Valve

Check valve for ventilation (125 mm)

Aerodynamic 80mm Ventilation Valve, no supports

125mm ventilation pipe valve

Air Duct Valve for 120mm Fan for 3d Printer Cabinet Ventilation

Motorized Ventilation Valve 125mm (28BYJ-48) for Itho Daalderop

4in Valved Y Splitter for Ventilation

Ventilation check valve v2

Air System Ventilation - Check Valve for 150mm

Air ventilation valve

Ventilation System with Automatic Valve (60mm)
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КЛАПАН ЭНДИ: ПЕРЕХОДНОЙ КЛАПАН ДЛЯ МАСКИ С ТРУБКОЙ НА СИСТЕМЕ ВЕНТИЛЯЦИИ COVID

Ventilation valve frame

Supply ventilation valve for 110mm pipe and 120mm cooler

Ventilation back valve for 125mm tube

Ventilation grid with tesla valve "wave shape"

Petrol Tank Ventilation Valve

Ventilation adapter for camper van waste water valve

28byj-48 mount on ventilation valve

Apartment ventilation valve

Ventilation valve
«3D Models of Ventilation Valves and Duct Flaps»
The collection covers several families of parts. One-way check valves use a flap or membrane to allow air in one direction and block reverse flow. Backdraft valves and exhaust limiters serve similar purposes but often mount at the end of a pipe or behind a fan. There are also ceiling and wall valves, which are usually designed as a grille with an integrated flap.
Before printing, check the duct diameter and the mounting method on the author's page. Look at the number of parts, whether the flap is printed separately, and if the design needs supports. The material and settings the author lists matter for moving parts, since a tight clearance can fuse or a loose one can leak. Photos of real prints help you judge how the valve sits in a pipe.
To find more options, try synonyms such as backdraft damper, non-return valve, or duct flap. Related topics include fan adapters, duct connectors, and ventilation grilles. You can also search by nominal pipe size or by the type of installation, like ceiling, wall, or inline.
Domande frequenti
What is a ventilation check valve used for?
How do I choose the right size for a ventilation valve?
Do ventilation valve models need supports?
Can I scale a ventilation valve to fit a different pipe?
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