# Compression Tee SiGMA-Li PERTTW2534 – welded tee 25×3/4" for PE-RT piping

**URL:** https://aio.lv/en/product--sigma-li-perttw2534--11824976
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTTW2534
**EAN:** 5902814624302
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-perttw2534--11824976

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li PERTTW2534 is a welded tee (trójnik zgrzewany) designed for use with PE-RT piping systems. The fitting provides a 25 mm to 3/4" branch connection and is intended for creating reliable branch lines in hot- and cold-water distribution or underfloor heating installations. Suitable where a durable welded tee for PE-RT material compatibility is required.

## Long description

SiGMA-Li PERTTW2534 is a welded compression tee designed for PE-RT piping systems, providing a 25 mm to 3/4" branch connection. Intended for use in hot- and cold-water distribution and underfloor heating installations, this fitting allows creation of reliable branch lines with material compatibility for PE-RT pipes. The design focuses on secure welded joints and consistent flow characteristics to integrate with standard PE-RT plumbing layouts.
Advantages
The welded tee construction ensures a strong, leak-resistant junction between the main PE-RT run and the 3/4" branch, reducing the risk of failures at connection points. Compatibility with PE-RT material eliminates dissimilar material stress and supports uniform thermal expansion, while the compression-style interface simplifies installation where welding or fusion to the branch is required. The compact geometry conserves space and helps maintain hydraulic performance in distribution manifolds and heating circuits.
Suitable for
 Creating branch lines from 25 mm PE-RT mains to 3/4" fixtures or manifolds
 Hot- and cold-water distribution systems in residential and commercial buildings
 Underfloor heating installations using PE-RT piping
 Repair or extension of existing PE-RT pipe networks requiring a welded tee connection
Key specifications
 Connection sizes: 25 mm (main) to 3/4" (branch)
 Fitting type: welded tee for PE-RT piping systems
 Material compatibility: PE-RT
 Application: potable water distribution and underfloor heating
 Installation method: welded/fusion connection on PE-RT main with compression-compatible branch interface
How to use
Prepare straight, clean pipe ends and ensure PE-RT surfaces are free of debris or oxidised layers before welding. Align the 25 mm PE-RT main into the tee body and perform the appropriate weld or fusion process according to PE-RT welding guidelines and local standards. Connect the 3/4" branch side using the compatible compression or threaded interface as specified for the installation, checking for correct alignment and full engagement. After assembly, perform pressure and leak tests in line with applicable regulations and allow any welded joints to cool and stabilise before system commissioning.
Usage recommendations
Use only with PE-RT piping and follow manufacturer and local codes for welding parameters, pressure testing, and thermal cycling. Verify compatibility with any valves, manifolds, or fittings attached to the 3/4" branch and avoid exposing joints to mechanical stress during curing. Routine inspection after commissioning is recommended to confirm leak-free performance.

## FAQ

### How much does the SiGMA-Li PERTTW2534 welded tee 25×3/4" cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 60 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 23.07.2026 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 SiGMA-Li 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 SiGMA-Li 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/11824976/67226810_large.webp