# Copper reducing coupling VIEGA 28 mm to 15 mm (mufa) model 105037

**URL:** https://aio.lv/en/product--viega-105037--11832430
**Data updated:** 2026-03-09 14:43 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** VIEGA
**Manufacturer code:** 105037
**EAN:** 4015211105037
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--viega-105037--11832430

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Copper reducing coupling (mufa) VIEGA model 105037 joins copper pipes with a 28 mm to 15 mm transition. Manufactured from copper for plumbing installations, it provides a durable mechanical and hydraulic connection between different diameter copper tubes. Suitable for potable water, heating and general plumbing systems where a reliable reduction fitting is required.

## Long description

Copper reducing coupling VIEGA 28 mm to 15 mm (mufa) model 105037 is a solid copper solder-type fitting designed to connect copper pipes of different diameters in plumbing and heating systems. Manufactured from copper, the coupling creates a permanent, conductive and corrosion-resistant joint between a 28 mm and a 15 mm copper tube. It is intended for use in potable water installations, central heating circuits and general plumbing where a secure reduction fitting is required.
Advantages
The coupling is made from copper, offering good thermal and electrical conductivity as well as resistance to corrosion in typical water and heating environments. Its straightforward design ensures predictable hydraulic performance with minimal flow disruption across the reduction. The solid construction supports soldered or brazed installation methods, providing a reliable long-term mechanical connection when installed according to industry practice.
Suitable for
Reducing copper pipe diameter from 28 mm to 15 mm in potable water systems
Connections in domestic and commercial central heating circuits
General plumbing and repair work where a durable copper reduction is needed
Key specifications
Material: copper
Connection type: reducing coupling (solder/braze compatible)
Inlet diameter: 28 mm
Outlet diameter: 15 mm
Application: potable water, heating, general plumbing
How to use
Prepare the copper pipe ends by cutting square, deburring and cleaning the surfaces to remove oxidation and grease. Apply appropriate flux for copper soldering or brazing, insert pipes fully into the coupling and perform soldering or brazing per accepted plumbing standards and local codes. Allow joints to cool and remove any excess flux. Verify leak tightness by pressure testing the system after installation and before putting into service.
Usage recommendations
Use appropriate safety equipment and follow local regulations for soldering or brazing. Select compatible solder alloys and flux for potable water installations and ensure joints are cleaned thoroughly to prevent contamination. For systems requiring insulation, wrap the joint as needed to maintain thermal performance.
Copper redukcijas savienotājs VIEGA 28 mm uz 15 mm (mufa) modelis 105037 ir cieta vara montāžas detaļa, paredzēta dažāda diametra vara cauruļu savienošanai santehnikas un apkures sistēmās. Izgatavots no vara, savienotājs nodrošina pastāvīgu, elektriski vadītspējīgu un pretkorozijas savienojumu starp 28 mm un 15 mm vara cauruli. Piemērots dzeramā ūdens instalācijām, centrālās apkures shēmām un vispārējai santehnikai, ja nepieciešama uzticama reducējoša mufa.
Priekšrocības
Vara konstrukcija nodrošina labu siltuma un elektrisko vadītspēju un rezistenci pret koroziju standarta ūdens un apkures apstākļos. Vienkāršais dizains samazina hidrauliskos zudumus pie diametra pārejas. Stiprinājums ir piemērots metināšanai ar lodēšanu vai Brazing metodi, nodrošinot ilgtermiņa mehānisku savienojumu, ja tas ir veikts saskaņā ar nozares prasībām.
Piemērots lietošanai
Vara cauruļu reducēšana no 28 mm līdz 15 mm dzeramā ūdens sistēmās
Savienojumi mājas un komerciālajās centrālās apkures shēmās
Vispārēja santehnikas uzstādīšana un remonta darbi, kur nepieciešama izturīga vara mufa
Svarīgākās specifikācijas
Materiāls: varš
Savienojuma veids: reducējoša mufa (piemērota lodēšanai/brazing)
Iekšējais diametrs: 28 mm
Ārējais diametrs: 15 mm
Izmantotība: dzeramais ūdens, apkure, vispārēja santehnika
Kā lietot
Sagatavojiet vara cauruļu galus, nogriežot taisni, noņemot burras un attīrot virsmas no oksidācijas un taukiem. Uzklājiet atbilstošu fluxu lodēšanai vai brazing procesam, ievietojiet caurules pilnībā mufā un veiciet lodēšanu vai brazing atbilstoši vietējiem standartiem. Pēc atdzesēšanas noņemiet lieko fluxu un pārbaudiet savienojuma hermētiskumu ar spiediena testu pirms nodošanas ekspluatācijā.
Lietošanas ieteikumi
Izmantojiet piemērotu drošības aprīkojumu un ievērojiet vietējos noteikumus lodēšanas vai brazing darbu veikšanai. Izvēlieties saderīgas lodēšanas sakausējuma un fluxus dzeramā ūdens instalācijām un rūpīgi notīriet savienojumus, lai novērstu piesārņojumu. Ja sistēmai nepieciešama izolācija, atbilstoši apvelciet savienojumu, lai saglabātu termisko efektivitāti.
Медное уменьшительное муфтовое соединение VIEGA 28 мм на 15 мм (мюфа) модель 105037 представляет собой цельномедный фитинг, предназначенный для соединения медных труб разных диаметров в сантехнических и отопительных системах. Изготовленное из меди, соединение обеспечивает постоянный, электрически проводящий и стойкий к коррозии шов между трубами диаметром 28 мм и 15 мм. Применимо в системах питьевого водоснабжения, системах центрального отопления и при общих сантехнических работах при необходимости надежного редукционного фитинга.
Преимущества
Медный материал обладает хорошей теплопроводностью и стойкостью к коррозии в типичных условиях эксплуатации водяных и отопительных систем. Простая конструкция снижает гидравлические потери при переходе диаметра. Изделие подходит для пайки или мягкой пайки (brazing), что обеспечивает долговечное механическое соединение при соблюдении монтажных норм.
Подходит для
Сужение медных труб с 28 мм до 15 мм в системах питьевого водоснабжения
Соединения в бытовых и коммерческих системах центрального отопления
Общие сантехнические работы и ремонт, требующие прочного медного редукционного фитинга
Ключевые характеристики
Материал: медь
Тип соединения: редукционная муфта (под пайку/бразинг)
Входной диаметр: 28 мм
Выходной диаметр: 15 мм
Область применения: питьевая вода, отопление, общая сантехника
Как использовать
Подготовьте концы медных труб: отрежьте ровно, удалите заусенцы и очистите поверхность от оксидной пленки и загрязнений. Нанесите соответствующий флюс для пайки или бразинга, полностью вставьте трубы в муфту и выполните пайку согласно действующим нормам и правилам. После остывания удалите остатки флюса и проведите опрессовку системы для проверки на герметичность перед вводом в эксплуатацию.
Рекомендации по эксплуатации
Используйте средства индивидуальной защиты и соблюдайте местные правила при выполнении работ по пайке или бразингу. Подбирайте совместимые припои и флюсы для систем питьевой воды и тщательно очищайте соединения во избежание загрязнений. При необходимости теплоизоляции оберните соединение для сохранения тепловых характеристик системы.

## FAQ

### How much does the VIEGA copper reducing coupling 28→15 mm 105037 cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 614 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 21.07.2026 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/11832430/67232997_large.webp