# REHAU transition coupling with internal thread 40 to Rp 1/2 SDR 11 LX

**URL:** https://aio.lv/en/product--rehau-11691901001--12264813
**Data updated:** 2026-04-14 22:35 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** REHAU
**Manufacturer code:** 11691901001
**EAN:** 4061264935787
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.49 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 17.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rehau-11691901001--12264813

## 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

REHAU transition coupling with internal thread connects RAUPEX/PEX piping (SDR 11) to a Rp 1/2 female thread. Designed for 40 mm pipe size (SDR 11), model LX, it provides a reliable mechanical and sealed transition between plastic pipe and threaded fittings for plumbing, heating and potable water installations.

## Long description

REHAU transition coupling with internal thread 40 to Rp 1/2 SDR 11 LX is a mechanical adapter engineered to join RAUPEX/PEX plastic piping (SDR 11) of 40 mm outer diameter to a Rp 1/2 female threaded fitting. The coupling provides a sealed connection between polymer pipe systems and standard threaded components used in plumbing, heating and potable water installations, enabling integration of plastic distribution lines with valves, fixtures or metal pipework.
Advantages
The coupling features a compact design compatible with RAUPEX/PEX SDR 11 tubing and a female Rp 1/2 thread, allowing a direct transition without additional brazing or complex fittings. It is intended to create a reliable mechanical joint that resists leakage when installed according to manufacturer instructions. The component supports potable water and heating system applications and is suitable for use where plastic-to-thread interfaces are required.
Suitable for
Joining 40 mm SDR 11 RAUPEX/PEX pipe to Rp 1/2 threaded valves or fittings
Domestic and commercial potable water distribution lines
Heating system circuits where PEX pipe meets threaded components
Repair or retrofit work connecting plastic pipe to existing threaded fittings
When it may not be suitable
This transition coupling is designed specifically for RAUPEX/PEX SDR 11 with a 40 mm pipe size and a Rp 1/2 female thread; it is not suitable for pipes with different SDR ratings, outer diameters or non-PEX materials. Applications requiring higher pressure ratings, special chemical resistance, or connections to metric thread standards other than Rp should be evaluated against the relevant system requirements.
Key specifications
Pipe compatibility: RAUPEX/PEX SDR 11, 40 mm outer diameter
Thread type: Rp 1/2 internal (female) thread
Model series: LX coupling designed for transition between plastic pipe and threaded fittings
Intended use: potable water and heating systems
How to use
Prepare the RAUPEX/PEX pipe by cutting squarely and ensuring the end is clean and free of burrs. Install the coupling according to REHAU installation instructions for SDR 11 systems: insert the pipe to the required depth, secure the mechanical connection as specified, and tighten the Rp 1/2 threaded mating component using appropriate sealing method for the thread if required by the system (for example, thread sealant or tape compatible with potable water). Verify alignment and perform a pressure/leak test following local codes and manufacturer recommendations before handing the system over to service.
What to consider before purchase
Confirm pipe material and SDR rating: must be RAUPEX/PEX SDR 11, 40 mm
Verify the mating threaded component uses Rp 1/2 internal thread
Assess system pressure, temperature ranges and approvals required for potable water or heating use
Ensure compatibility with existing fittings, valves and installation tools
Usage recommendations
Use with RAUPEX/PEX systems installed according to REHAU guidelines. Follow local plumbing codes for thread sealing and pressure testing; employ trained installers to ensure reliable long-term performance.

## FAQ

### How much does the REHAU transition coupling 40 → Rp 1/2 SDR 11 LX cost, and is it available for purchase?

The price is 21.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 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/12264813/68535132_large.webp