# Compression reducing coupling TECE 25 x 20 mm 766505 for plumbing connections

**URL:** https://aio.lv/en/product--tece-766505--11817484
**Data updated:** 2026-03-09 11:04 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** TECE
**Manufacturer code:** 766505
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 9.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tece-766505--11817484

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Compression reducing coupling TECE 25 x 20 mm (model 766505) is a plumbing fitting for connecting pipes of 25 mm and 20 mm diameters. Designed for secure, leak-resistant joints in potable water and heating installations, it provides a compact transition between different pipe sizes. Suitable for use in repair, renovation and new-build plumbing work where reliable diameter reduction is required.

## Long description

Compression reducing coupling TECE 25 x 20 mm is a plumbing fitting designed to connect pipes with 25 mm and 20 mm outside diameters. It creates a compact and robust transition between larger and smaller pipes and is intended for potable water and heating system installations. The coupling provides a secure compression joint that reduces the need for soldering or solvent welding and is suitable for repair, renovation and new-build plumbing work where a reliable diameter reduction is required.
Advantages
The TECE compression reducing coupling offers a compact design that occupies minimal space in piping runs and installation cavities. Its compression connection ensures a leak-resistant joint when installed correctly, enabling quick assembly without hot works or adhesives. The fitting is compatible with common copper and plastic pipes used in domestic water and heating systems and provides consistent mechanical strength across the transition. The metal and sealing components are selected to maintain performance in potable water applications.
Suitable for
 Connecting 25 mm to 20 mm pipes in potable water installations
 Reducing pipe diameter in heating and radiator circuits
 Repairing or modifying existing piping systems
 New-build plumbing where space is limited
Key specifications
 Connection type: compression reducing coupling between two different pipe diameters
 Pipe diameters: suitable for 25 mm and 20 mm outside diameter pipes
 Application: potable water and heating systems
 Material composition: metal body with elastomeric sealing elements for watertight joints
 Installation method: push-on/insert pipe with compression nut tightening for secure joint
 Design: compact inline reducer for tight installation spaces
How to use
Ensure pipes are clean, straight-cut and free of burrs before installation. Insert the smaller-diameter pipe and the larger-diameter pipe into their respective ends of the coupling until they seat against the internal stops. Tighten the compression nuts by hand and then use a wrench to secure the nuts to the torque recommended by installation standards or the manufacturer's general guidance for compression fittings. After assembly, pressurize the system and inspect the joint for leaks. If any leakage is detected, isolate that section and retighten or replace sealing components as necessary.
Usage recommendations
Use the coupling only with compatible pipe materials and sizes (25 mm and 20 mm) and follow local plumbing codes. Avoid excessive overtightening of the compression nuts to prevent damage to sealing elements. For installations in potable water systems, ensure materials and installation practice comply with drinking water regulations. When used in heating systems, perform a pressure and temperature test according to system requirements.

## FAQ

### How much does the TECE reducing coupling 25 x 20 mm 766505 cost, and is it available for purchase?

The price is 10.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 09.07.2026 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 TECE 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 TECE 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/11817484/67219271_large.webp