# Check/Backflow Prevention Valve FERRO ZZA02 EA 3/4" for Protecting Against Reverse Flow

**URL:** https://aio.lv/en/product--ferro-zza02--11836308
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** FERRO
**Manufacturer code:** ZZA02
**EAN:** 5901095672538
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 11.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-zza02--11836308

## 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 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

FERRO ZZA02 EA 3/4" is a check/backflow prevention valve designed to protect installations from reverse flow. Fitted for 3/4" connections, it prevents contamination by stopping unwanted backflow in plumbing systems. Suitable for residential and commercial water supply lines, it ensures one-directional flow and helps maintain system hygiene and safety.

## Long description

FERRO ZZA02 EA 3/4" is a check/backflow prevention valve designed to protect plumbing installations from reverse flow. Intended for 3/4" threaded connections, this valve allows one-directional water flow to reduce the risk of contamination in domestic and commercial supply lines. Constructed for inline installation, it supports water system hygiene by preventing unwanted backflow and maintaining consistent flow direction.
Advantages
The check valve provides reliable backflow prevention through a simple mechanical design that requires no external power. Its compatibility with standard 3/4" connections simplifies replacement and integration into existing pipelines. The valve’s compact form factor and straightforward operation reduce maintenance complexity while helping to protect fixtures and appliances from contaminated return flow.
Suitable for
 Domestic water supply lines requiring backflow protection
 Commercial installations such as small offices, shops or cafés
 Connections to boilers, water heaters, and pumps where one-way flow is needed
 Retrofit projects to upgrade hygiene and safety of plumbing systems
Key specifications
 Connection size: 3/4" threaded
 Function: check valve / backflow prevention
 Flow direction: one-way (prevents reverse flow)
 Typical application medium: potable water and service water lines
 Installation type: inline, between supply fittings
How to use
Shut off the water supply before installation and relieve pressure in the line. Fit the valve in the intended flow direction, ensuring the arrow or marking on the body aligns with system flow. Use appropriate sealing tape or thread sealant on the 3/4" threads and tighten to secure the connection without over-torquing. After installation, slowly restore supply and check for leaks and correct operation by verifying one-directional flow.
Usage recommendations
Inspect the valve periodically for signs of wear, debris, or leakage and clean or replace if performance degrades. Avoid exposure to aggressive chemicals or temperatures beyond typical potable water system ranges. For installations on systems with frequent pressure fluctuations or special regulations, consult local plumbing codes or a qualified technician to confirm suitability and placement.

## FAQ

### How much does the Check/Backflow Valve FERRO ZZA02 EA 3/4" cost, and is it available for purchase?

The price is 13.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 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/11836308/67235973_large.webp