# VIEGA Mufa 18x3/4 GW Profipress S – threaded coupling 18 mm to 3/4" female thread

**URL:** https://aio.lv/en/product--viega-628888--11818123
**Data updated:** 2026-03-09 11:05 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** VIEGA
**Manufacturer code:** 628888
**EAN:** 4015211628888
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 10.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--viega-628888--11818123

## 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

VIEGA Mufa 18x3/4 GW Profipress S is a press-fit to female-thread coupling designed for use in plumbing and heating systems. The fitting connects 18 mm Profipress S copper or compatible pipe to a 3/4" female threaded connection. It is intended for secure, leak-resistant joints in potable water, heating and HVAC installations where a press-to-thread transition is required.

## Long description

VIEGA Mufa 18x3/4 GW Profipress S is a press-to-thread coupling engineered to connect 18 mm Profipress S copper or compatible pipe to a 3/4" female threaded fitting. The product is intended for potable water, heating and HVAC systems where a reliable transition from press-fit piping to a threaded connection is required. The design supports fast installation using a compatible pressing tool while providing a leak-resistant joint suitable for pressure-bearing applications.
Advantages
The coupling combines a pressed copper connection and a precision-cut female thread to reduce the need for additional adapters. Its construction ensures corrosion-resistant performance in typical plumbing and heating environments and reduces assembly time compared with soldered or brazed transitions. The press connection provides consistent sealing and mechanical stability when installed with the recommended Profipress S pressing profile.
Suitable for
Connecting 18 mm Profipress S copper pipe to 3/4" female threaded valves or fittings
Domestic and commercial potable water installations
Heating circuits and radiators requiring a press-to-thread transition
HVAC systems where a secure threaded interface is needed
Key specifications
Connection type: press-fit on one end, 3/4" female thread on the other
Pipe compatibility: 18 mm Profipress S copper or compatible pipe
Material: corrosion-resistant metal suitable for plumbing and heating use
Application: potable water, heating and HVAC installations
Sealing principle: press-fit joint designed for leak-resistant performance
How to use
Prepare the 18 mm copper pipe by cutting square and deburring the end. Slide the coupling over the pipe until it seats fully against the stop. Use a compatible Profipress pressing tool with the correct jaw/profile to make the press connection according to the tool manufacturer’s instructions. For the threaded end, apply the appropriate thread sealant or tape if required by the system design, then tighten the mating 3/4" male fitting or valve to the specified torque. Verify alignment and perform pressure testing following applicable codes and standards.
Usage recommendations
Use only approved pressing tools and jaws for Profipress S systems and follow local regulations for potable water and heating installations. Confirm material compatibility with system media and perform pressure and leak tests after installation. Avoid using the fitting in applications with aggressive chemicals or temperatures outside the validated range for Profipress S components.

## FAQ

### How much does the VIEGA Mufa 18x3/4 GW Profipress S cost, and is it available for purchase?

The price is 12.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 71 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/11818123/67220082_large.webp