# Compression Reducing Tee SiGMA-Li PERT 25x16 mm – welded reducing tee for PE-RT piping

**URL:** https://aio.lv/en/product--sigma-li-perttr2516--11825618
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTTR2516
**EAN:** 5902837600062
**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-perttr2516--11825618

## 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 reducing tee SiGMA-Li for PE-RT piping with 25 mm run and 16 mm branch. Designed for creating a reduced branch connection in hot- and cold-water distribution and underfloor heating systems using PE-RT material. Provides leak-resistant welded joints, compatible with PERT pipes of matching diameters, suitable for building installations and service risers.

## Long description

Welded reducing tee SiGMA-Li PERT 25x16 mm is a welded reducing tee intended for PE-RT piping systems. The fitting provides a 25 mm main run with a 16 mm reduced branch, designed specifically for forming a reduced branch connection in hot- and cold-water distribution and underfloor heating systems built with PE-RT pipes. The fitting is manufactured for welded joints to ensure a secure, leak-resistant connection when installed with compatible PE-RT pipes of the corresponding diameters.
Advantages
The welded design eliminates the need for mechanical connectors at the joint, reducing potential leak points and simplifying the installation where a diameter transition is required. Compatibility with PE-RT material ensures reliable thermal and chemical stability within typical domestic and light commercial water distribution and floor heating applications. The compact geometry of the reducing tee allows neat routing in confined spaces and integration into service risers or manifolds.
Suitable for
 Creating reduced-diameter branches in PE-RT hot- and cold-water distribution
 Underfloor heating manifolds and branch connections
 Service risers and concealed building installations
 Repairs or modifications where a 25 mm to 16 mm reduction is required
Key specifications
 Main run diameter: 25 mm
 Branch diameter: 16 mm
 Material compatibility: PE-RT piping systems
 Connection type: welded joint fitting for permanent fusion with pipes
 Application: hot- and cold-water distribution, underfloor heating
How to use
Prepare pipe ends by cutting square and removing burrs, then verify pipe diameters and wall thickness match the fitting dimensions. Use the recommended welding or fusion technique for PE-RT material according to installer guidelines and equipment manufacturer instructions. Insert the prepared pipe ends into the fitting sockets, apply heat fusion until correct melt and alignment are achieved, and allow the joint to cool undisturbed to form a leak-resistant connection. After cooling, inspect the weld visually and perform pressure testing in line with relevant standards and local regulations.
Usage recommendations
Use certified PE-RT pipes of matching diameters and follow the fusion equipment manufacturer's parameters for temperature and time. Avoid mechanical stress on newly welded joints during cooling. For systems with higher temperatures or pressures, verify that the overall system design and material selection meet required operating limits and local codes.

## FAQ

### How much does the Reducing Tee SiGMA-Li PERT 25x16 mm 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 — 65 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/11825618/67227288_large.webp