# VIEGA reducing coupling FKM 22 x 18 mm 629 021

**URL:** https://aio.lv/en/product--viega-629021--11831802
**Data updated:** 2026-03-09 14:42 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** VIEGA
**Manufacturer code:** 629021
**EAN:** 4015211629021
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--viega-629021--11831802

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

Reducing coupling VIEGA FKM 22 x 18 mm (model 629 021) designed for joining pipes or fittings of different diameters. Constructed with FKM sealing material, it provides a secure transition from 22 mm to 18 mm. Suitable for plumbing and heating installations where a reliable, chemical- and temperature-resistant seal is required.

## Long description

Reducing coupling VIEGA FKM 22 x 18 mm is a compact transition fitting designed to connect pipes or components with different outer diameters. Constructed for professional plumbing and heating systems, the coupling uses an FKM (fluoroelastomer) sealing element to provide durable resistance to heat, oils and many chemicals while ensuring a secure, leak-minimised connection between a 22 mm and an 18 mm line.
Advantages
The FKM sealing material offers elevated temperature stability and chemical resistance compared with standard elastomers, extending service life in demanding environments. The coupling's compact design facilitates installation in confined spaces and provides a reliable mechanical and sealed transition between different pipe sizes. Manufactured to fit industry-standard 22 mm and 18 mm pipes, it supports consistent hydraulic performance with minimal pressure drop at the joint.
Suitable for
 Plumbing systems requiring a size transition from 22 mm to 18 mm
 Heating circuits and radiator connections
 Systems exposed to elevated temperatures or aggressive media where FKM resistance is needed
 Retrofit work and tight-space installations
Key specifications
 Connection sizes: 22 mm to 18 mm
 Sealing material: FKM (fluoroelastomer)
 Application area: plumbing and heating installations
 Design: reducing coupling for mechanical and sealed transition
 Compatibility: suitable for use with standard 22 mm and 18 mm copper, stainless steel or compatible plastic tubing where compatible with fitting design
How to use
Ensure both pipe ends are clean, deburred and correctly cut to length. Slide the coupling onto the larger diameter side first if required by the installation method, align the smaller pipe and push fully into the coupling until the stop or visual marker is reached. Follow the system manufacturer's instructions for any additional securing steps and perform a pressure test after installation to verify the seal. Use appropriate tools and personal protective equipment during assembly.
Usage recommendations
Check compatibility of FKM with the media in the system prior to installation and avoid exposure to substances that exceed the specified temperature or chemical resistance limits of FKM seals. When installing in concealed or hard-to-access locations, allow for inspection and testing access to confirm long-term leak-tightness.

## FAQ

### How much does the VIEGA reducing coupling FKM 22 x 18 mm 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 — 86 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 28.07.2026 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 VIEGA 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 VIEGA 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/11831802/67232356_large.webp