# Straight union fitting with screw connection SiGMA-Li PERTZPŚ1612 for PE-RT 16×1/2"

**URL:** https://aio.lv/en/product--sigma-li-pertzps1612--11825600
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTZPŚ1612
**EAN:** 5902814622261
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-pertzps1612--11825600

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

Straight union fitting SiGMA-Li PERTZPŚ1612 for PE-RT pipes with 16 mm diameter and 1/2" threaded connection. The fitting features a screw (compression) connection designed for secure joints in plumbing and heating systems. Suitable for potable water and underfloor heating installations where PE-RT pipe compatibility and leak-tight mechanical fastening are required.

## Long description

Straight union fitting SiGMA-Li PERTZPŚ1612 is designed for reliable connections between PE-RT pipes with a 16 mm outer diameter and a 1/2" threaded appliance or valve. The fitting uses a screw (compression) connection that secures the pipe without the need for soldering or special tools, providing a tight mechanical joint suitable for potable water and underfloor heating systems where PE-RT compatibility is required.
Advantages
The screw compression design enables a quick and reversible installation while maintaining leak-tight performance when assembled correctly. Constructed to match the dimensions of 16 mm PE-RT tubing, the fitting provides consistent alignment and stable mechanical support at the joint. The threaded 1/2" connection allows direct attachment to standard valves, manifolds or fixtures commonly used in plumbing and heating applications.
Suitable for
Joining 16 mm PE-RT pipe to 1/2" threaded valves, manifolds or appliances
Domestic potable water supply lines
Underfloor heating circuits using PE-RT piping
Repair or retrofit work where a mechanical, reversible connection is preferred
Key specifications
Pipe compatibility: PE-RT, 16 mm outer diameter
Threaded connection size: 1/2" (female or male as applicable to the mating component)
Connection type: screw/compression mechanical joint
Typical applications: potable water, heating systems, underfloor heating
Material compatibility: suitable for common plumbing metals and plastics when used with appropriate sealing
How to use
Cut the PE-RT pipe square and deburr the end before inserting it fully into the fitting. Ensure the pipe is pushed to the correct stop so the compression element can seat properly. Tighten the screw/compression nut according to the manufacturer’s recommended torque or until a secure mechanical grip is achieved, taking care not to overtighten. After assembly, pressurize the system and inspect the joint for leaks before completing insulation or covering.
Usage recommendations
Use compatible sealing materials and follow local plumbing codes. For long-term performance in potable water and heating systems, verify that the mating components and installation practices match the expected pressure and temperature ranges of the system.

## FAQ

### How much does the SiGMA-Li straight union fitting PERTZPŚ1612 cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 46 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 24.07.2026 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/11825600/67227274_large.webp