# Fitting tee SiGMA-Li PERTT16T — welded 16 mm PE-RT plumbing connector

**URL:** https://aio.lv/en/product--sigma-li-pertt16t--11825001
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTT16T
**EAN:** 5902837600048
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-pertt16t--11825001

## 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

Welded tee fitting SiGMA-Li PERTT16T for 16 mm PE-RT pipe systems. Designed as a three-way plumbing connector for joining or branching PE-RT tubing, this welded polyethylene fitting ensures a continuous homogeneous joint without mechanical threads. Suitable for potable water and underfloor heating circuits where 16 mm PE-RT piping is specified.

## Long description

Welded tee SiGMA-Li PERTT16T is a three-way polyethylene fitting designed for use with 16 mm PE-RT piping systems. It creates a homogeneous welded connection that eliminates mechanical threads and fittings, providing a continuous, leak-resistant joint appropriate for cold and hot potable water lines and underfloor heating manifolds where 16 mm tubing is specified.
Advantages
The welded design produces a uniform, monolithic joint that reduces the risk of leaks compared with threaded or compression fittings. Made for compatibility with PE-RT pipe, the fitting resists the effects of thermal cycling and provides stable hydraulic performance in domestic and light commercial installations. Its compact form factor and smooth internal surface help maintain flow characteristics while minimizing pressure drop.
Suitable for
Branching or connecting 16 mm PE-RT potable water pipelines
Underfloor heating circuits using 16 mm PE-RT tubing
Repair or modification of existing PE-RT pipe runs in residential buildings
Key specifications
Material: polyethylene for elevated temperature resistance (PE-RT)
Connection type: welded fusion joint for homogeneous sealing
Nominal pipe diameter: 16 mm
Configuration: three-way tee for branching
Application temperature: suitable for cold and hot water systems and typical underfloor heating temperatures
How to use
Prepare the 16 mm PE-RT pipe ends by cutting square and removing any debris or burrs. Use an appropriate electrofusion or butt-fusion welding procedure specified for PE-RT material to join the fitting to the pipe, following the welding equipment manufacturer’s parameters for temperature and duration. Allow the welded joints to cool undisturbed to achieve full mechanical strength before pressure testing or putting the system into service.
Usage recommendations
Verify compatibility between the fitting and the specific PE-RT pipe grade and follow relevant local plumbing codes. Perform pressure and leak tests after installation, and avoid exposing welded joints to mechanical stress during curing. For systems carrying potable water, follow potable water installation practices and flush the system before commissioning.

## FAQ

### How much does the Welded tee SiGMA-Li PERTT16T 16 mm PE-RT cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 131 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 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/11825001/67226833_large.webp