# VIEGA ZŁ.MUFA 15x3/4" GW 642143 Steel fitting, 15×3/4" female thread

**URL:** https://aio.lv/en/product--viega-642143--12403817
**Data updated:** 2026-04-30 18:29 (EEST)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** VIEGA
**Manufacturer code:** 642143
**EAN:** 4015211642143
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 7.43 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--viega-642143--12403817

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

VIEGA ZŁ.MUFA 15x3/4" GW (MPN 642143) is a steel coupling with a 15 mm to 3/4" female thread connection. Designed for plumbing and heating installations, it provides a threaded transition between metric pipework and imperial fittings. Suitable for use in water and heating systems where durable steel construction and reliable threaded connections are required.

## Long description

VIEGA ZŁ.MUFA 15x3/4" GW 642143 is a steel coupling that provides a transition between 15 mm metric pipework and a 3/4" female (Rp) threaded fitting. Manufactured in galvanised non-alloyed steel and fitted with an EPDM sealing element in a polygonal housing, this model is designed for plumbing and heating systems where a durable, threaded connection is required. The fitting incorporates VIEGA's press connection concept and is intended for use with water and heating media in systems that accept press and threaded transitions.
Advantages
The coupling combines a press-compatible end and a Rp female thread in one component, reducing the need for separate adapters. Galvanised non-alloyed steel construction offers mechanical robustness and resistance to typical installation stresses. The integrated EPDM sealing element provides a reliable seal at the threaded connection without additional sealing materials, and the polygon design assists secure tightening and alignment during installation.
Suitable for
 Plumbing systems connecting 15 mm metric pipes to 3/4" threaded components
 Domestic and commercial heating installations where press-to-thread transitions are required
 Water supply lines compatible with galvanised steel components
When it may not be suitable
This fitting is intended for use with water and typical heating media; it is not specified for aggressive chemical fluids or gases. It may not be appropriate for applications that require stainless steel or non-galvanised materials for corrosion resistance in highly corrosive environments. If the system standard mandates a different thread type or special sealing materials, this product may not meet those requirements.
Key specifications
 Connection types: 15 mm press-compatible end and 3/4" female (Rp) thread
 Material: galvanised non-alloyed steel
 Sealing: EPDM sealing element in polygon housing
 Model: 1112
 Designed for: water and heating system installations
How to use
Prepare the 15 mm pipe end according to the press connection manufacturer's instructions, ensuring the pipe is cut square and deburred. Insert the pipe into the press-compatible end of the coupling and complete the press operation with the correct jaws and tooling. Screw the 3/4" female thread onto the corresponding male threaded component, making sure the EPDM seal seats properly. Tighten to the torque and installation practice appropriate for the system; do not overtighten to avoid damaging the sealing element or thread. Perform pressure testing of the completed installation following applicable regulations.
What to consider before purchase
 Verify compatibility of the 3/4" Rp thread with the mating male thread in your system
 Confirm that galvanised steel is acceptable for the installation environment and media
 Ensure you have the correct pressing tools and jaws for 15 mm press connections
 Check that EPDM is suitable for the system temperature range and fluid used
Usage recommendations
Use the coupling within the manufacturer's recommended pressure and temperature limits, follow standard installation and testing procedures, and inspect the EPDM sealing element before assembly to ensure a reliable threaded connection between metric pipework and imperial fittings.

## Specifications

| Feature | Value |
|---|---|
| Material | Steel |
| Diameter | 150 mm |
| Quantity per pack | 5 pc(s) |

## FAQ

### How much does the VIEGA ZŁ.MUFA 15x3/4" GW 642143 cost, and is it available for purchase?

The price is 8.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 15.07.2026 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/12403817/68694356_large.webp