# Reducer SiGMA-Li R5040 50x40 mm pipe fitting

**URL:** https://aio.lv/en/product--sigma-li-r5040--11826569
**Data updated:** 2026-03-09 11:16 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** R5040
**EAN:** 5902814626474
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 3.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-r5040--11826569

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

SiGMA-Li R5040 is a 50x40 mm pipe reducer designed to connect pipes of differing diameters. Manufactured by SiGMA-Li, this fitting ensures a secure transition between 50 mm and 40 mm lines and is suitable for plumbing, drainage or HVAC systems where diameter adaptation is required. Its compact design simplifies installation in tight spaces and enables reliable fluid or air flow control.

## Long description

SiGMA-Li R5040 is a 50x40 mm pipe reducer designed to join pipes with different diameters. The fitting provides a smooth, compact transition from a 50 mm line to a 40 mm line, suitable for use in plumbing, drainage and HVAC systems where diameter adaptation is necessary. Its space-saving profile facilitates installation in confined locations while maintaining consistent flow characteristics for liquids or air.
Advantages
The reducer offers a reliable mechanical connection between two pipe sizes with minimal impact on flow. Its compact form factor reduces the required installation space and simplifies alignment. Built to standard dimensions, the fitting allows quick integration into existing pipelines and supports consistent sealing when installed with compatible seals or adhesives. The product’s straightforward geometry minimizes turbulence and pressure loss at the transition point.
Suitable for
Connecting 50 mm and 40 mm pipes in domestic and commercial plumbing
Transition sections in drainage systems
Adapting pipe diameters in HVAC ducting for air distribution
Repair or modification of existing pipework where size change is needed
Key specifications
Input diameter: 50 mm
Output diameter: 40 mm
Type: concentric reducer for axial alignment
Application: plumbing, drainage, HVAC systems
Design: compact profile for tight installation spaces
How to use
Confirm compatibility of pipe materials and diameters before installation. Prepare pipe ends by cleaning and, if required by the pipe system, deburring to ensure smooth seating. Slide the reducer onto the larger or smaller pipe end according to the system layout and use the recommended sealing method for your piping type (mechanical clamp, elastomeric seal, solvent weld or adhesive) to secure the joint. Verify axial alignment and tighten connections evenly to avoid deformation of the fitting. After assembly, inspect the connection for leaks and perform a pressure or flow test appropriate to the system.
Usage recommendations
Use the reducer with compatible pipe materials and matching sealing systems to ensure leak-free operation. For installations subject to pressure or thermal cycling, choose appropriate seals and follow accepted installation practices. When routing in confined spaces, allow clearance for tools and future maintenance. If in doubt about material compatibility or required sealing methods, consult relevant technical guidelines or a qualified installer.

## FAQ

### How much does the Reducer SiGMA-Li R5040 50x40 mm cost, and is it available for purchase?

The price is 4.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 29.07.2026 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/11826569/67228094_large.webp