# Conex reducing coupling 5000 series 28 x 18 mm, copper plumbing fitting

**URL:** https://aio.lv/en/product--conex-5243028018000--11818044
**Data updated:** 2026-03-09 11:05 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Conex
**Manufacturer code:** 5243028018000
**EAN:** 4011860178002
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Conex reducing coupling from the 5000 series, size 28 x 18 mm, designed for joining copper plumbing pipes of different diameters. The fitting provides a reliable mechanical and fluid-tight connection in potable water and heating systems where reduction between 28 mm and 18 mm pipes is required. Suitable for professional plumbing installations, repairs and renovations.

## Long description

Conex reducing coupling from the 5000 series, size 28 x 18 mm, is a copper plumbing fitting designed to join two copper pipes of different diameters. It creates a mechanical and fluid-tight transition between a 28 mm pipe and an 18 mm pipe, suitable for potable water and heating systems where a reduction is required. The coupling is intended for use in professional plumbing installations, repairs and renovations and is compatible with standard copper tubing sizes.
Advantages
The fitting is made of copper, which ensures corrosion resistance and long-term mechanical stability in water and heating circuits. Its reducing design provides a secure connection between pipes of different diameters without the need for complex adapters. The coupling supports a reliable seal for potable water applications when installed according to established plumbing practices.
Suitable for
Reducing a 28 mm copper pipe to an 18 mm copper pipe in potable water systems
Connections in central heating and hot water circulation where diameter change is required
Repair or renovation work on copper pipe networks in residential and commercial buildings
Professional plumbing installations where a durable mechanical joint is needed
Key specifications
Material: copper
Type: reducing coupling (female/female or compatible connection for copper tubing)
Connection sizes: 28 mm to 18 mm
Intended media: potable water and heating fluids
Application: mechanical joining of copper pipes of different diameters
How to use
Prepare both copper pipe ends by cutting square and deburring the inner and outer edges. Clean the pipe surfaces to remove oxidation and contaminants. Slide the coupling onto one pipe and align the second pipe to the opposite end; follow the specific joining method suitable for the coupling type used (for example, soldering or compression method as applicable). Ensure proper alignment and depth of insertion, then complete the joint according to standard plumbing procedures and local regulations. After installation, pressurize the system and inspect for leaks.
Usage recommendations
Use appropriate personal protective equipment and follow local plumbing codes. Verify compatibility of joining technique (solder, brazing, or mechanical compression) with the specific Conex 5000 series coupling variant you have. When used in potable water systems, flush and disinfect the section after installation if required by regulations.

## FAQ

### What payment options are available?

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### 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 Conex 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 Conex 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

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