# Pipe Coupling SiGMA-Li ZZ251 PP 25 mm (1")

**URL:** https://aio.lv/en/product--sigma-li-zz251--11826767
**Data updated:** 2026-03-09 11:16 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SiGMA-Li
**Manufacturer code:** ZZ251
**EAN:** 5902814628225
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-zz251--11826767

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

SiGMA-Li ZZ251 is a polypropylene (PP) pipe coupling for 25 mm (1") pipes. Designed to connect or extend sections of plastic piping, it provides a secure mechanical joint for water supply and general plumbing applications. The compact coupling suits indoor and outdoor installations where PP fittings are required and is compatible with standard 25 mm piping.

## Long description

SiGMA-Li ZZ251 PP 25 mm (1") is a polypropylene pipe coupling engineered to connect or extend 25 mm (1") plastic pipes. The coupling creates a mechanical joint suitable for water supply and general plumbing systems. Its compact design allows use in confined spaces and it is compatible with standard 25 mm piping made of polypropylene and other common plastic materials where socket-style couplings are applicable.
Advantages
The polypropylene construction provides chemical resistance, low weight and corrosion-free performance. The coupling delivers a straightforward mechanical connection without the need for adhesives or heat fusion when used with the correct installation method. Its compact dimensions simplify installation in tight areas and reduce the amount of exposed fitting. Designed for common plumbing applications, the coupling supports reliable water flow and long-term dimensional stability under normal operating conditions.
Suitable for
 Connecting two 25 mm (1") plastic pipes to extend a run
 Repairing a short section of damaged piping in domestic water systems
 Indoor and outdoor plumbing installations where PP fittings are specified
 General non-pressurized or low-pressure fluid conveyance in buildings
Key specifications
 Material: polypropylene (PP)
 Nominal pipe size: 25 mm (1")
 Type: straight coupling for inline joints
 Application: water supply and general plumbing
 Installation environment: indoor and outdoor use where PP is suitable
How to use
Ensure both pipe ends are cut square, clean and free of burrs or debris. Verify pipe compatibility with polypropylene fittings. Insert each pipe end fully into the coupling following any alignment marks or insertion depth guidelines from the pipe manufacturer. For mechanical or compression variants, tighten per the fitting instructions until a secure seal is achieved; for socket fittings intended for adhesive or fusion, use the proper joining method specified for PP systems. After installation, inspect the joint and perform a pressure or leak test appropriate for the system before returning to service.
Usage recommendations
Use appropriate personal protective equipment during installation. Avoid exposing polypropylene fittings to solvents and high temperatures beyond the material’s rated limits. When used in pressurized systems, follow relevant plumbing codes and perform pressure testing to confirm joint integrity.

## FAQ

### How much does the SiGMA-Li ZZ251 PP pipe coupling 25 mm cost, and is it available for purchase?

The price is 10.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 290 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 14.07.2026 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/11826767/67228212_large.webp