# PP 45° Elbow Fitting SiGMA-Li KN4520 for 20 mm Pipes

**URL:** https://aio.lv/en/product--sigma-li-kn4520--11826598
**Data updated:** 2026-03-09 11:16 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** KN4520
**EAN:** 5902814625330
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-17 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-kn4520--11826598

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li KN4520 is a polypropylene (PP) 45° elbow fitting designed for 20 mm piping. The compact plumbing component provides a fixed-angle directional change for plastic water or fluid lines, suitable for domestic and light commercial installations. Use it to connect and route 20 mm PP pipes in supply, drainage, or distribution systems where a 45-degree bend is required.

## Long description

SiGMA-Li KN4520 is a polypropylene (PP) 45° elbow fitting engineered for 20 mm pipes. It provides a compact and reliable directional change for plastic water and fluid lines, intended for domestic and light commercial plumbing systems. The fitting is suitable for use in supply, drainage and distribution circuits where a fixed 45-degree bend is needed to alter pipe routing without additional machining or complex connectors.
Advantages
The polypropylene construction offers chemical resistance and low weight while remaining durable under normal pressure conditions of water distribution systems. Its 45° geometry reduces flow resistance compared with sharper angled fittings and allows smoother changes in direction. The compact dimensions make it easy to fit in confined spaces and to integrate with standard 20 mm pipework. The part is simple to assemble and requires minimal maintenance.
Suitable for
Domestic cold and hot water distribution (compatible with PP pipe systems)
Light commercial plumbing and HVAC secondary lines
Drainage and waste lines where a 45° directional change is required
Retrofitting or modifying existing 20 mm PP installations
Key specifications
Material: polypropylene (PP)
Angle: 45 degrees
Pipe connection size: 20 mm
Function: fixed elbow for directional change
Application: water and fluid piping in domestic and light commercial systems
How to use
Prepare the 20 mm pipe ends by cutting squarely and deburring to ensure a clean fit. Insert the pipes into the socketed ends of the elbow until fully seated according to the pipe system's installation guidelines. Use the appropriate joining method specified for polypropylene fittings in your system—such as solvent welding, fusion, or mechanical push-fit—following the manufacturer's recommendations for temperature, curing time and pressure testing. After installation, perform a pressure check and inspect all joints for leaks before commissioning.
Usage recommendations
Use this 45° elbow in applications compatible with polypropylene materials and within the pressure and temperature limits of the overall piping system. Avoid exposure to aggressive solvents or temperatures beyond the rating of PP. When routing near heat sources or under mechanical stress, provide adequate support and spacing to prevent deformation. For critical systems, consult installation standards or a qualified technician to confirm suitability and correct joining method.

## FAQ

### How much does the PP 45° Elbow SiGMA-Li KN4520 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 — 806 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 10.07.2026 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/11826598/67228114_large.webp