# Check/backflow prevention valve FERRO EA 5/4" ZZA04 for water systems

**URL:** https://aio.lv/en/product--ferro-zza04--11835991
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** FERRO
**Manufacturer code:** ZZA04
**EAN:** 5901095672514
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 25.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-zza04--11835991

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

FERRO ZZA04 is a check/backflow prevention valve (EA) with 5/4" connection designed for protection against reverse flows in water installations. Manufactured by FERRO, the valve prevents contamination of the supply by stopping backflow and is suitable for residential and light-commercial plumbing systems where reliable non-return function is required.

## Long description

FERRO ZZA04 is a check/backflow prevention valve with a 5/4" connection designed for water systems. The valve is intended to prevent reverse flow and protect the potable water supply from contamination by automatic closing when backpressure or back-siphonage occurs. The construction is suitable for installation in residential and light-commercial plumbing networks where a reliable non-return function is required.
Advantages
The valve provides dependable unidirectional flow control through a compact design that fits standard 5/4" pipe connections. Its mechanical non-return mechanism operates automatically without external power and requires minimal maintenance in normal use. The unit is compatible with common water installation materials and is built to reduce the risk of flow reversal and associated contamination of the supply.
Suitable for
Residential potable water systems
Light-commercial plumbing installations
Protection against backflow in branch lines and supply risers
Use in boiler feed and cold-water distribution circuits
Key specifications
Connection size: 5/4" (female/male as required by installation)
Function: check / backflow prevention (non-return)
Application medium: potable water and cold water systems
Operation: mechanical, automatic closing on reverse flow
Typical installation position: horizontal or vertical according to local codes
How to use
Install the valve in the flow line in the correct orientation so that the arrow on the body matches the intended direction of flow. Ensure all thread or flange connections are tightened to the installer’s recommended torque and sealed with suitable thread sealant or gasket material where required. After installation, flush the line to remove debris and verify that the valve allows forward flow and closes reliably when flow reverses. Regular visual inspections and periodic operational checks will help ensure continued performance.
Usage recommendations
Follow local plumbing codes and manufacturer guidance for placement and maintenance. Use appropriate tools and sealing materials for 5/4" connections, avoid excessive mechanical stress on pipework near the valve, and schedule periodic checks to confirm the non-return function remains effective.

## FAQ

### How much does the FERRO check/backflow valve EA 5/4" ZZA04 cost, and is it available for purchase?

The price is 30.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 15.07.2026 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 FERRO 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 FERRO 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/11835991/67235702_large.webp