# Elbow fitting SiGMA-Li KN4525 45° PP 25 mm for plumbing/drainage

**URL:** https://aio.lv/en/product--sigma-li-kn4525--11826693
**Data updated:** 2026-03-09 11:16 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** KN4525
**EAN:** 5902814625347
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-kn4525--11826693

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li KN4525 is a 45° elbow plumbing fitting made of polypropylene (PP) with a 25 mm nominal diameter. Intended for use in drainage and sanitary systems, it provides a directional change in piping runs. Suitable for connecting compatible PP pipes and fittings in residential or light commercial installations where a 45° bend is required.

## Long description

SiGMA-Li KN4525 45° elbow fitting is a plumbing component made of polypropylene (PP) with a nominal diameter of 25 mm, designed for drainage and sanitary installations. The fitting provides a 45-degree change of direction in piping runs and is intended to connect compatible PP pipes and fittings in residential and light commercial systems where gentle directional adjustment is required.
Advantages
The polypropylene construction offers chemical resistance and low weight, making handling and installation straightforward. The 45° angle reduces hydraulic resistance compared with multiple sharper turns, supporting smoother flow in drainage lines. The compact 25 mm size is compatible with standard small-diameter sanitary piping and allows a discreet installation in confined spaces.
Suitable for
 Residential drainage and sanitary pipework
 Light commercial plumbing installations
 Repair or modification of existing PP piping systems
 Areas requiring a 45° directional change in small-diameter lines
Key specifications
 Material: polypropylene (PP)
 Angle: 45°
 Nominal diameter: 25 mm
 Application: drainage and sanitary systems
 Connection type: compatible with PP pipe fittings
How to use
Prepare compatible PP pipe ends by cutting square and deburring. Ensure mating surfaces are clean and dry before assembly. Fit the elbow to the pipe according to the manufacturer’s recommended joining method for PP components (such as solvent welding, socket fusion, or appropriate mechanical connection specified for the pipe system). Verify alignment to maintain a smooth 45° run and support adjacent pipe sections to avoid stress on the joint.
Usage recommendations
Use the elbow in systems designed for PP fittings and follow local plumbing codes. Avoid exposing the fitting to temperatures and chemicals beyond PP material limits. Support piping at regular intervals and inspect joints after assembly to ensure leak-free performance.

## FAQ

### How much does the SiGMA-Li KN4525 45° PP elbow 25 mm cost, and is it available for purchase?

The price is 3.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 566 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 09.07.2026 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/11826693/67228165_large.webp