# Pipe elbow Alkotest MK16 16x16 PEX Sigma-LI angled fitting for PEX piping

**URL:** https://aio.lv/en/product--alkotest-mk16--11822965
**Data updated:** 2026-03-09 11:11 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** Alkotest
**Manufacturer code:** MK16
**EAN:** 5901171120038
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 7.43 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alkotest-mk16--11822965

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Alkotest MK16 is a 16x16 PEX elbow (Sigma-LI) designed as an angled fitting for PEX piping systems. The product provides a right-angle connection between two 16 mm PEX pipes, suitable for potable water and heating installations where compact directional change is required. It is used in domestic and light commercial plumbing to route PEX lines through corners and confined spaces.

## Long description

Alkotest MK16 16x16 PEX Sigma-LI angled fitting is a right-angle elbow designed for joining two 16 mm PEX pipes in potable water and heating systems. The compact 90° geometry enables neat directional changes in tight spaces and corners, making it suitable for domestic and light commercial plumbing installations that use PEX piping. Constructed for compatibility with standard 16 mm PEX lines, the elbow provides a reliable mechanical transition where a compact, angled connection is required.
Advantages
This PEX elbow offers a compact, space-saving shape that simplifies routing of pipelines in confined areas and around obstacles. Its geometry reduces stress on connected pipes at directional changes, and it is designed for compatibility with common PEX 16 mm installation practices. The fitting supports potable water and heating applications and is intended for straightforward installation with standard PEX connection methods.
Suitable for (tasks / use cases)
 Right-angle connections of 16 mm PEX supply lines in domestic plumbing
 Routing heating circuits and radiators using 16 mm PEX piping
 Neat directional changes in bathrooms, kitchens and utility rooms
 Installations in confined or corner spaces where a compact elbow is required
Key specifications
 Connection type: 90° elbow for two 16 mm PEX pipes
 Pipe diameter compatibility: 16 mm
 Application: potable water and heating systems
 Design: compact angled fitting for confined spaces and corners
 Material compatibility: designed for use with PEX piping systems
How to use
Prepare PEX pipes by cutting square and deburring the ends before assembly. Insert each 16 mm PEX pipe into the respective elbow socket according to the selected PEX connection method (crimp, clamp, push-fit or other compatible system). Ensure pipes are fully seated and any connection rings or clamps are fitted and secured to the manufacturer’s installation tolerances. Verify alignment and check for leaks after pressurising the system according to local plumbing codes.
Usage recommendations
Use with appropriately rated 16 mm PEX tubing and follow recommended installation procedures for potable water or heating circuits. Inspect connections visually and with pressure testing before putting the system into regular service. Store fittings in a dry place and protect from direct sunlight to preserve material properties.

## FAQ

### How much does the Alkotest MK16 16x16 PEX elbow cost, and is it available for purchase?

The price is 8.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 235 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 03.07.2026 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 Alkotest 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 Alkotest 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/11822965/67224969_large.webp