# Round duct connector with check valve airRoxy 125 (coupling)

**URL:** https://aio.lv/en/product--airroxy-02-475--11947124
**Data updated:** 2026-03-11 13:42 (EET)
**Category:** Ventilation Filters
**Manufacturer:** airRoxy
**Manufacturer code:** 02-475
**EAN:** 5901583208447
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--airroxy-02-475--11947124

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Round duct connector (coupling) airRoxy 125 with an integrated check valve. Designed for 125 mm circular ventilation ducts, this component provides a secure connection while preventing backflow. Suitable for residential and light-commercial ventilation systems, exhaust or supply air lines, and retrofit installations where one-way airflow control is required.

## Long description

The round duct connector with check valve airRoxy 125 is a coupling designed for 125 mm circular ventilation ducts. It combines a secure mechanical connection with an integrated one-way valve that prevents backflow. The component is intended for use in residential and light-commercial ventilation systems, in both exhaust and supply air lines, and in retrofit installations where controlled directional airflow is needed.
Advantages
This coupling provides a compact solution that integrates a check valve into a standard round connector, reducing the number of separate components and installation steps. Its design ensures a firm fit on 125 mm ducts and reliable prevention of reverse airflow, helping maintain intended ventilation patterns. The product is suitable for tight spaces and for cases where a retrofit check valve is required without changing the existing duct layout.
Suitable for
125 mm circular ventilation ducts
Residential mechanical ventilation systems (exhaust or supply)
Light-commercial ventilation and HVAC applications
Retrofit installations requiring one-way airflow control
Bathroom, kitchen or utility exhaust lines to prevent backdraft
Key specifications
Designed for nominal duct diameter: 125 mm
Integrated one-way (check) valve for backflow prevention
Coupling type: round duct connector
Suitable for supply and exhaust air applications
Compact form factor for retrofit and confined spaces
How to use
Insert the coupling into the corresponding 125 mm circular duct ends and ensure a secure fit by pushing the connector fully onto both duct sections. If required, apply appropriate sealing material or tape at the joints to improve airtightness according to local installation practices. The integrated check valve is ready-mounted and will operate automatically to allow airflow in the intended direction and close to prevent reverse flow. No separate valve assembly is necessary.
Usage recommendations
For reliable performance, check the orientation of the coupling before finalizing the installation so the check valve faces the correct airflow direction. Periodically inspect the valve area for dust buildup or obstruction and clean as needed during routine ventilation maintenance. When used in humid or grease-prone environments, consider additional corrosion-resistant ducting or regular cleaning to preserve valve operation.

## FAQ

### How much does the airRoxy round duct connector 125 with check valve cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 112 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All airRoxy products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized airRoxy service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11947124/67390628_large.webp