# Straight Coupling SiGMA-Li MZP25 for PEX pipes 25×25 mm

**URL:** https://aio.lv/en/product--sigma-li-mzp25--11825093
**Data updated:** 2026-03-09 11:14 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** MZP25
**EAN:** 5902814623305
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 9.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-mzp25--11825093

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li MZP25 is a straight coupling designed for joining PEX (cross-linked polyethylene) pipes with 25×25 mm connections. The fitting provides a direct, in-line connection between two PEX pipe ends and is intended for plumbing and heating installations where 25 mm diameter PEX piping is used. Suitable for repair, extension or new installations requiring a compact, straight PEX coupling.

## Long description

SiGMA-Li MZP25 straight coupling for PEX pipes is a compact connector engineered to join two 25×25 mm PEX (cross-linked polyethylene) pipe ends in a straight, in-line configuration. Designed for plumbing and heating systems, this coupling enables a direct continuity of the pipeline with minimal profile, suitable for both new installations and repairs where a reliable, space-saving connection is required.
Advantages
The coupling offers a simple, direct joining solution for 25 mm PEX piping that preserves pipe alignment and flow characteristics. Its compact design reduces the footprint within pipe runs and installation cavities. The fitting is intended to provide a stable mechanical connection suitable for potable water, heating circuits, and general plumbing use when installed according to manufacturer's and local installation standards.
Suitable for
Joining two 25×25 mm PEX pipe ends in-line
Repairing damaged sections of PEX piping
Extending existing 25 mm PEX runs in plumbing systems
Compact installations where low profile fittings are required
Key specifications
Connection type: straight in-line coupling for PEX piping
Pipe diameter compatibility: 25 mm (both ends 25×25 mm)
Material: designed for use with cross-linked polyethylene (PEX) pipes
Application: potable water and heating systems, domestic plumbing
Form factor: compact, low-profile straight connector
How to use
Prepare PEX pipe ends by cutting square and deburring, then slide the coupling onto the pipe ends following the installation method recommended for the specific PEX system (crimp, clamp, or push-fit as applicable). Ensure full insertion depth and proper alignment before completing the mechanical or thermal joint according to the pipe and fitting system instructions. After installation, verify the joint for correct seating and perform a pressure test as part of the system commissioning to confirm leak-free operation.
Usage recommendations
Use compatible PEX installation tools and follow local plumbing codes. Confirm that the chosen joining method matches the coupling variant and PEX pipe type. For heated circuits, consider thermal expansion allowances and secure pipe runs to prevent movement at joints.

## FAQ

### How much does the SiGMA-Li MZP25 PEX straight coupling 25×25 mm cost, and is it available for purchase?

The price is 11.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 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 08.07.2026 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/11825093/67226912_large.webp