# Welded tee fitting SiGMA-Li PERTT20T — PE-RT polyethylene 20×20×20 (socket)

**URL:** https://aio.lv/en/product--sigma-li-pertt20t--11826910
**Data updated:** 2026-03-09 11:16 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTT20T
**EAN:** 5902837601533
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 3.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-pertt20t--11826910

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.89 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

Welded tee fitting SiGMA-Li PERTT20T made from PE-RT (polyethylene) for plumbing and heating systems. The 20×20×20 mm socket (tuleja) configuration provides a three-way branch for distributing fluids in piping networks. Suitable for pressure installations where PE-RT is specified; designed for use with compatible polyethylene pipes and welding installation methods.

## Long description

The Welded tee fitting SiGMA-Li PERTT20T is a three-way connector made from PE-RT polyethylene for plumbing and heating systems. The 20×20×20 mm socket configuration provides a compact branch point to split or combine fluid flow in piping networks. Designed for fusion/welding installation methods with compatible PE-RT pipes, this tee supports pressure applications where PE-RT material properties are required.
Advantages
This PE-RT welded tee offers uniform material compatibility with PE-RT piping, reducing the risk of joint incompatibility. Its socket design ensures a reliable welded connection when installed by appropriate fusion techniques, delivering a smooth internal flow path and minimal pressure drop. The fitting is corrosion-resistant, lightweight, and maintains dimensional stability under typical operating temperatures for plumbing and low-temperature heating circuits.
Suitable for
Domestic and commercial potable water distribution
Underfloor heating and low-temperature radiant heating systems
Plumbing branches and manifold connections in PE-RT piping networks
Pressure installations specified for PE-RT material
Key specifications
Material: PE-RT (polyethylene raised temperature resistant)
Configuration: 20×20×20 mm socket tee (three-way branch)
Connection type: Socket for welded/fusion joining
Application: Pressure piping for plumbing and heating
Properties: Corrosion-resistant, lightweight, dimensionally stable under typical operating conditions
How to use
Prepare compatible PE-RT pipes by cutting square and deburring the ends before installation. Ensure pipe and fitting surfaces are clean and free from contaminants. Use the appropriate fusion welding method recommended for PE-RT materials—such as socket fusion or other heat-based joining techniques compatible with the fitting—to create leak-free joints. Follow accepted installation standards and allow adequate cooling time before applying pressure to the system. Verify alignment and support of connected pipes to avoid stress on the welded tee.
Usage recommendations
Install the fitting only with pipes and welding equipment specified for PE-RT to maintain joint integrity. Observe manufacturer and local plumbing codes for pressure ratings, temperature limits, and testing procedures after assembly.

## FAQ

### How much does the Welded tee SiGMA-Li PERTT20T PE-RT 20×20×20 cost, and is it available for purchase?

The price is 4.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 22.07.2026 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/11826910/68542851_large.webp