# Pipe reducer INVENA ZO-20-108, galvanized steel, 4" x 3" connection

**URL:** https://aio.lv/en/product--invena-zo-20-108--11828058
**Data updated:** 2026-03-09 11:17 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** INVENA
**Manufacturer code:** ZO-20-108
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--invena-zo-20-108--11828058

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

INVENA ZO-20-108 is a galvanized steel pipe reducer with a 4" to 3" connection intended for joining pipes of different diameters. Its corrosion-resistant zinc coating suits plumbing and drainage systems, HVAC installations, and industrial piping where a secure transition between 4-inch and 3-inch lines is required. Compatible with standard threaded or welded pipe fittings depending on installation.

## Long description

INVENA ZO-20-108 is a galvanized steel pipe reducer designed to connect a 4" line to a 3" line. The reducer provides a reliable transition between pipes of different diameters and features a zinc-coated surface for improved resistance to corrosion. It is suitable for use where a secure mechanical or welded connection is required in plumbing, drainage, heating, ventilation and industrial piping systems.
Advantages
The galvanized steel construction offers durability and resistance to rust in moist or exposed environments. A uniform zinc coating reduces maintenance needs and extends service life compared with untreated steel. The simple concentric reduction geometry ensures predictable flow characteristics and minimal turbulence at the joint when installed correctly. Compatibility with standard threaded or welded fittings allows flexible installation methods according to system requirements.
Suitable for
Plumbing and drainage systems where diameter reduction from 4" to 3" is required
HVAC duct and piping runs that need a secure mechanical transition
Industrial process lines with galvanized steel compatibility
Key specifications
Material: galvanized steel
Connection size: 4" to 3"
Coating: zinc galvanization for corrosion resistance
Geometry: concentric reducer design for consistent flow
Installation: suitable for threaded or welded connections depending on system
How to use
Inspect mating pipe ends to ensure they are clean, square and free of debris before fitting the reducer. Select the appropriate joining method for the system—threaded coupling where compatible, or welding for a permanent joint—following applicable codes and safety practices. Apply sealing compounds or tape if using threaded connections and tighten to the recommended torque. For welded joints, prepare surfaces and use an appropriate welding procedure for galvanized steel to avoid contamination and ensure structural integrity.
Usage recommendations
When installing in systems that carry potable water or process fluids, confirm compatibility of galvanized surfaces with the fluid and local regulations. For outdoor or aggressive environments, periodic inspection is advised to verify the coating remains intact; repair or replace components if significant corrosion appears. Follow manufacturer and local code guidance for welding galvanized materials, including proper ventilation and surface preparation.

## FAQ

### How much does the INVENA ZO-20-108 pipe reducer 4" x 3" cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 17.07.2026 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 INVENA 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 INVENA 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/11828058/67229151_large.webp