# Underfloor plumbing set SiGMA-Li SIGMA LI Komplet podtynkowy 16×1/2×100 PE-RT (DWZ)

**URL:** https://aio.lv/en/product--sigma-li-pertkpm2012--11825621
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Underfloor Heating
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTKPM2012
**EAN:** 5902814622162
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-10 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-pertkpm2012--11825621

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li SIGMA LI Komplet podtynkowy is an underfloor/embedded plumbing set with PE-RT piping rated 16×1/2×100 and DWZ configuration. Designed for concealed installation in heating and potable water systems, it provides corrosion-resistant PE-RT material, standardized dimensions for fittings, and suitability for renovation or new-build projects requiring compact, recessed connections.

## Long description

SiGMA-Li SIGMA LI Komplet podtynkowy 16×1/2×100 PE-RT (DWZ) is an underfloor/embedded plumbing set intended for concealed connections in heating and potable water installations. The set uses PE-RT piping with nominal dimensions 16×1/2×100 and a DWZ configuration, offering a corrosion-resistant polymer solution suitable for both renovation and new-build projects where compact recessed connections are required.
Advantages
The PE-RT material provides resistance to corrosion and mineral buildup, ensuring stable flow and long service life in domestic water and heating circuits. Standardized dimensions and fittings compatibility simplify installation and replacement of components. The compact recessed design reduces visible hardware and enables integration into walls or floor structures without compromising installation neatness or access when maintenance is needed.
Suitable for
 Concealed heating manifold connections in underfloor heating systems
 Hidden potable water distribution points in bathrooms and kitchens
 Renovation projects where existing walls or floors are adapted for new plumbing
 New-build installations requiring compact, recessed plumbing solutions
Key specifications
 Pipe material: PE-RT (polyethylene of raised temperature resistance)
 Nominal pipe size: 16 mm outer diameter with 1/2" connection interface and 100 mm recessed length
 Configuration: DWZ recessed mounting arrangement
 Application: potable water and heating systems
 Installation type: concealed/embedded in wall or floor structures
How to use
Prepare a suitable recess in the wall or floor structure to accommodate the set and ensure secure mounting. Connect the 16 mm PE-RT pipe to the 1/2" connection point using compatible fittings and follow standard sealing procedures. Verify alignment and compression or push-fit engagement according to the fitting manufacturer’s recommendations. After installation, test the system under working pressure to confirm there are no leaks before closing the wall or floor surface.
Usage recommendations
Use fittings and tools compatible with PE-RT piping and verify local codes for potable water and heating installations. Protect the exposed pipe ends and recess from debris during finishing works, and perform pressure testing after installation to ensure system integrity.

## FAQ

### How much does the SiGMA-Li SIGMA LI Komplet podtynkowy 16×1/2×100 cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 02.07.2026 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/11825621/67227290_large.webp