# SiGMA-Li plumbing tee MTZ1612 16x1/2" male-threaded PEX connector

**URL:** https://aio.lv/en/product--sigma-li-mtz1612--11825475
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** MTZ1612
**EAN:** 5902814621868
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 10.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-mtz1612--11825475

## 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

Plumbing tee SiGMA-Li MTZ1612 designed for PEX piping with a 16 mm inlet/outlet and a 1/2" male threaded branch. Serves to split or join PEX lines while providing a threaded connection for valves, meters or fittings. Suitable for potable water and heating systems where a robust PEX-to-thread transition is required.

## Long description

The SiGMA-Li plumbing tee MTZ1612 is a PEX connector designed for reliable transitions between 16 mm PEX pipe and 1/2" male threaded fittings. It allows a continuous flow path through the 16 mm inlet and outlet while providing a threaded branch for attaching valves, meters or other threaded components. The fitting is intended for potable water and heating installations where a secure PEX-to-thread junction is required and where corrosion-resistant performance and leak-tight connections are important.
Advantages
This plumbing tee combines a press-fit style connection for 16 mm PEX with a standardized 1/2" male thread, enabling straightforward integration of threaded accessories without adaptors. Its design facilitates a compact, space-saving installation and reduces the number of separate fittings required. The material and construction support long service life in domestic water and heating systems and minimize the risk of leaks when installed according to recommended procedures.
Suitable for
Connecting 16 mm PEX supply and return lines in potable water systems
Branching off to 1/2" threaded valves, angle stops or meters
Small heating circuits and underfloor heating manifolds where a threaded branch is needed
Repairing or modifying existing PEX installations that require a threaded outlet
Key specifications
PEX connection size: 16 mm
Threaded branch: 1/2" male thread
Function: tee connector for splitting or joining PEX lines with threaded branch
Intended media: potable water and heating fluids
Typical installation orientation: in-line with perpendicular threaded outlet
How to use
Prepare the 16 mm PEX pipe by cutting squarely and de-burring the end. Insert the PEX end fully into the 16 mm connection until it reaches the stop, then secure according to the PEX system's joining method (crimp, clamp, push-fit or press) compatible with this SiGMA-Li tee. Apply appropriate thread sealant or tape to the 1/2" male thread and attach the threaded valve or fitting, tightening to the manufacturer's recommended torque. Verify alignment and support the piping to avoid undue strain on the joint before pressurizing the system and performing a leak test.
Usage recommendations
Use components and installation tools that are compatible with 16 mm PEX systems and follow local plumbing codes. Ensure threaded connections use suitable sealing material and avoid overtightening to prevent damage to threads. After installation, perform a pressure test at operating conditions to confirm leak-tight performance before placing the system into service.

## FAQ

### How much does the SiGMA-Li MTZ1612 PEX tee 16x1/2" cost, and is it available for purchase?

The price is 12.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 227 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

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