# Compression/Butt Fusion Fitting SiGMA-Li PERTMR2016T — PE-RT polyethylene sleeve 20×16 mm

**URL:** https://aio.lv/en/product--sigma-li-pertmr2016t--11825345
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** PERTMR2016T
**EAN:** 5902837600093
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-08-05 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-pertmr2016t--11825345

## 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

SiGMA-Li PERTMR2016T is a welded/press sleeve fitting made of PE-RT (polyethylene of raised temperature resistance) designed for joining pipes with a 20 mm to 16 mm transition using a sleeve (tuleja). The part is intended for plumbing and heating installations where PE-RT piping is used, providing a mechanical and thermoplastic joint for branch or reducer connections in potable water and underfloor heating systems.

## Long description

SiGMA-Li PERTMR2016T — PE-RT polyethylene sleeve 20×16 mm is a welded/press transition fitting designed for connecting PE-RT pipes where a reduction from 20 mm to 16 mm is required. The fitting is produced from PE-RT (polyethylene of raised temperature resistance) and provides a combined mechanical and thermoplastic joint suitable for potable water and underfloor heating systems. Its sleeve-style design enables branch or reducer connections in systems that use press or fusion installation methods.
Advantages
The fitting combines the heat-resistant properties of PE-RT with a sleeve construction that supports both welding and pressing installation techniques, resulting in reliable, leak-resistant joints. Its compact reducer profile minimises space requirements in manifolds and tight installation zones. Made from a material suitable for hot water distribution, the fitting maintains dimensional stability under operational temperatures typical for heating and plumbing systems.
Suitable for
Transition connections from 20 mm to 16 mm PE-RT pipes
Branching and reducing points in potable water distribution
Underfloor heating manifold and branch installations
Repairs or retrofits where a compact reducer sleeve is required
Key specifications
Material: PE-RT (polyethylene of raised temperature resistance)
Connection type: sleeve for welded or press joining
Pipe sizes: 20 mm to 16 mm transition
Application: potable water and heating systems, including underfloor heating
Design: compact reducer/sleeve for branch or reducing connections
How to use
Select the appropriate installation method for the system — welding (butt or electrofusion where applicable) or compatible press tooling. Prepare pipe ends by cutting square and deburring; ensure pipe outer diameters and wall thickness match PE-RT specifications. Insert the smaller pipe end into the sleeve for the 16 mm side and the 20 mm pipe into the larger end, following the chosen joining procedure and the tool manufacturer's instructions. Allow any thermoplastic welds to cool and any press fittings to set before returning the system to service. Verify joints visually and by pressure testing according to project requirements and local regulations.
Usage recommendations
Use SiGMA-Li PE-RT sleeve fittings only with compatible PE-RT pipe and certified installation tools. Adhere to recommended temperature and pressure limits for PE-RT systems, follow local plumbing codes, and perform pressure tests after installation to confirm tightness. For best results in underfloor heating, place reducer fittings in accessible positions for maintenance and inspection.

## FAQ

### How much does the SiGMA-Li PERTMR2016T PE-RT sleeve 20×16 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 — 53 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/11825345/67227092_large.webp