# PPSU pipe fitting REHAU Trójnik red PX 25-16-25 (RAUTITAN) – reducer tee for 25 mm to 16 mm

**URL:** https://aio.lv/en/product--rehau-11600621001--11825441
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** REHAU
**Manufacturer code:** 11600621001
**EAN:** 4007360375829
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-08-14 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rehau-11600621001--11825441

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Reducer tee PPSU pipe fitting by REHAU, model Trójnik red PX 25-16-25 from the RAUTITAN range. Designed to join two 25 mm pipes to a 16 mm branch, suitable for potable water and heating systems. Made of PPSU for chemical and temperature resistance; used in domestic and commercial plumbing for reliable transitions between pipe diameters.

## Long description

Reducer tee PPSU pipe fitting REHAU Trójnik red PX 25-16-25 (RAUTITAN) is a three-way connector designed to join two 25 mm supply lines with a 16 mm branch. Manufactured from PPSU (polyphenylsulfone), this fitting is intended for potable water and heating distribution systems where a reliable diameter transition and long-term dimensional stability are required. The fitting is compatible with RAUTITAN push-fit and press connection systems and is suitable for use in domestic and commercial plumbing installations.
Advantages
The PPSU material provides high resistance to heat, hydrolysis and common chemicals found in water systems, ensuring durability and reduced risk of degradation over time. The reducer tee offers secure, leak-resistant connections when installed with compatible RAUTITAN installation methods, and its compact form facilitates installation in confined spaces where a step-down from 25 mm to 16 mm is needed. Its design supports consistent flow transition and minimizes turbulence at the branching point.
Suitable for
Domestic potable water distribution where main pipe diameters reduce to smaller branch lines
Underfloor heating manifolds and local heating circuits with mixed pipe diameters
Commercial plumbing systems requiring durable plastic fittings resistant to thermal cycling
Renovation projects where existing 25 mm runs feed new 16 mm branches
Key specifications
Material: PPSU (polyphenylsulfone) for chemical and temperature resistance
Connection configuration: tee with two 25 mm inlets and one 16 mm outlet
Application: potable water and heating distribution systems
Compatibility: designed for RAUTITAN system connections and standard 25 mm / 16 mm pipe dimensions
Design: compact reducer tee for space-efficient installations
How to use
Prepare the connecting pipe ends by cutting squarely and deburring to ensure clean, smooth surfaces. Follow the RAUTITAN installation instructions for the chosen connection method (push-fit or press) and confirm compatibility with 25 mm and 16 mm pipes. Insert the pipes fully into the fitting until the stop is reached or perform the specified pressing procedure with the correct tool and jaw size. After installation, check all joints visually and, where applicable, perform a pressure test according to local codes and project requirements to verify leak-free connections.
Usage recommendations
Use this REHAU PPSU reducer tee in systems designed for potable water or heating, avoid exposure to aggressive chemicals outside normal water service, and always follow manufacturer instructions and local plumbing standards for handling, joining and pressure testing.

## FAQ

### How much does the PPSU REHAU Trójnik red PX 25-16-25 (RAUTITAN) cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 31.07.2026 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 REHAU 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 REHAU 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/11825441/67227148_large.webp