# Compression adapter Wavin 20 x 3/4" Nipple (20x3/4) for Alupex pipe

**URL:** https://aio.lv/en/product--wavin-08-7720-821k--11785135
**Data updated:** 2026-03-08 22:56 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** WAVIN
**Manufacturer code:** 08 7720 821K
**EAN:** 5711269018259
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wavin-08-7720-821k--11785135

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Wavin compression adapter 20 x 3/4" (20x3/4) is a fitting designed for connecting 20 mm Alupex (multilayer) pipe to a 3/4" threaded nipple. The brass/plastic compression connection provides a secure, leak-resistant joint without soldering. Suitable for potable water and heating systems, it simplifies transitions between pipe and threaded components in domestic and light commercial installations.

## Long description

Wavin compression adapter 20 x 3/4" Nipple (20x3/4) is a compact fitting for joining 20 mm Alupex multilayer pipe to a 3/4" threaded nipple. The adapter combines a brass thread section with a plastic compression body to create a secure, push-on style connection that does not require soldering or fusion. It is intended for potable water and heating installations where a reliable transition between Alupex pipework and threaded valves, radiators or other components is needed.
Advantages
The compression design ensures a leak-resistant joint with an even sealing surface and simple assembly using basic tools. Construction using brass for the threaded portion and durable engineering plastic for the compression body offers corrosion resistance and long service life in domestic plumbing and light commercial systems. The adapter is compatible with standard 3/4" threaded nipples and is sized to fit 20 mm Alupex multilayer pipe, allowing direct connection without additional fittings or adapters.
Suitable for
Connecting 20 mm Alupex (multilayer) pipe to 3/4" threaded nipples
Potable water distribution in residential buildings
Heating system connections to radiators, valves, or manifolds
Plumbing repairs and retrofit works where a threaded interface is required
Key specifications
Pipe compatibility: 20 mm Alupex (multilayer) pipe
Thread size: 3/4" male threaded nipple connection
Connection type: compression fitting with brass thread section and plastic compression body
Application: potable water and heating systems
Installation: push-on compression assembly; no soldering required
How to use
Prepare the Alupex pipe by cutting squarely and deburring the end. Slide the compression nut and insert the appropriate support sleeve (if required by the pipe manufacturer) onto the pipe, then push the pipe fully onto the adapter's compression seat. Tighten the compression nut to the recommended torque using a wrench or spanner until the connection is secure and leak-free. Connect the 3/4" threaded nipple into the adapter's brass thread and tighten to the specified torque for the downstream component. Follow local plumbing codes and the pipe manufacturer's instructions for additional fittings or support sleeves.
Usage recommendations
Verify compatibility with the specific Alupex multilayer pipe brand and, when necessary, use the correct support sleeve as recommended by the pipe manufacturer. Test the system under pressure after installation and re-torque fittings if required. Use appropriate sealant or PTFE tape on the 3/4" threaded nipple only where recommended and avoid over-tightening to prevent damage to the thread or compression body.

## FAQ

### How much does the Compression adapter Wavin 20 x 3/4" cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 16.07.2026 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 WAVIN 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 WAVIN 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/11785135/67181233_large.webp