# Fitting tee welded female SiGMA-Li PERTTW2012 — PE-RT polyethylene 20×1/2×20

**URL:** https://aio.lv/en/product--sigma-li-perttw2012--11824929
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTTW2012
**EAN:** 5902814627587
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-perttw2012--11824929

## 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 female tee SiGMA-Li PERTTW2012 is a PE-RT (polyethylene of raised temperature resistance) plumbing fitting with dimensions 20×1/2×20. Designed for creating branch connections between PE-RT pipes and a threaded 1/2″ connection, the fitting suits heating and hot-water distribution systems. It provides a welded pipe joint on two ends and a female threaded branch for valves, meters or adapters.

## Long description

Welded female tee SiGMA-Li PERTTW2012 is a PE-RT (polyethylene of raised temperature resistance) plumbing fitting with dimensions 20×1/2×20. It is designed to create a branch connection between two PE-RT pipes and a 1/2" female threaded outlet for valves, meters or threaded adapters. The fitting provides welded (socket or electrofusion-style) connections on the two main runs and a female thread in the branch, making it suitable for hot-water distribution and underfloor heating manifolds where a threaded connection is required.
Advantages
The fitting combines a corrosion-resistant PE-RT body with a precisely machined female thread, ensuring a stable transition between plastic piping and metal-threaded components. Welded ends provide leak-resistant joints when joined to compatible PE-RT pipes using the appropriate welding method. Its compact tee form factor allows installation in tight spaces and reduces the need for additional transition fittings.
Suitable for
Hot-water distribution systems
Underfloor heating circuits and manifolds
Connections to valves, flow meters and pressure gauges
Service branches in residential and light commercial plumbing
Key specifications
Material: PE-RT (polyethylene of raised temperature resistance) body with internal female thread
Connection type: welded connections on two ends, female threaded branch
Dimensions: 20×1/2×20 (pipe size × thread × pipe size)
Temperature compatibility: suitable for heated water systems (consult system limits for exact temperature and pressure ratings)
Use environment: indoor plumbing and heating installations
How to use
Prepare PE-RT pipes by cutting squarely and deburring the ends. Join the two main ends of the fitting to the PE-RT pipes using the recommended welding method for the piping system (socket welding, electrofusion or suitable manufacturer-approved technique). Ensure correct insertion depth and follow welding equipment settings and cooling times. Use the female threaded branch to attach a valve, meter or adapter using appropriate sealing (PTFE tape or thread sealant) and torque values for the installed component. After assembly, pressure-test the system according to applicable standards before putting into service.
Usage recommendations
The fitting should be installed by qualified personnel familiar with PE-RT welding procedures and local plumbing regulations. Verify material compatibility between the fitting’s female thread and the threaded component to avoid galvanic corrosion; use compatible adapters or dielectric unions where required. Always follow the piping system manufacturer's temperature and pressure limits and perform a pressure test after installation.

## FAQ

### How much does the Welded female tee SiGMA-Li PERTTW2012 20×1/2×20 cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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/11824929/68509995_large.webp