# Check valve FERRO ZZK6 2" with flap for fluid backflow prevention

**URL:** https://aio.lv/en/product--ferro-zzk6--11836431
**Data updated:** 2026-03-09 14:50 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** FERRO
**Manufacturer code:** ZZK6
**EAN:** 5901095644092
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 42.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-zzk6--11836431

## 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 ZZK6 is a 2" check valve with a flap designed to prevent backflow in fluid systems. It provides one-way flow control for applications in water and heating installations, pump systems and pipelines where reverse flow protection is required. The valve's compact design suits inline installation and maintenance access.

## Long description

FERRO ZZK6 2" check valve with flap is a compact inline valve designed to prevent fluid backflow in plumbing, heating and pump systems. The valve ensures one-way flow control, reducing the risk of reverse circulation and protecting pumps and system components. Its construction allows straightforward installation in pipelines and provides accessible maintenance without requiring complex modifications to existing systems.
Advantages
The FERRO ZZK6 combines a space-saving body with a hinged flap mechanism that responds reliably to changes in flow direction. Its design minimizes pressure loss while providing consistent sealing against backflow. The valve's robust construction is intended for routine use in water and heating applications, offering dependable operation and reduced need for frequent servicing.
Suitable for
 Domestic and commercial water supply lines
 Heating systems and radiators
 Boiler and circulation pump discharge lines
 Pumped fluid circuits where one-way flow is required
Key specifications
 Nominal diameter: 2 inches (inline connection)
 Type: flap (hinged disc) check valve for one-way flow control
 Typical application media: water and heating fluids
 Installation orientation: inline, suitable for horizontal and certain vertical runs depending on system layout
 Maintenance: accessible design for inspection and cleaning
How to use
Install the FERRO ZZK6 in the pipeline following the system flow direction indicated by the valve orientation. Ensure connections are tightened according to pipe material and sealing method used. After installation, pressurize the system and check for leaks and correct flap operation under normal flow. Periodically inspect the valve for accumulation of debris or mineral deposits that could impede flap movement and clean as necessary to maintain reliable backflow protection.
Usage recommendations
For optimal performance, select the correct 2" pipe fittings and sealing materials compatible with the system medium and temperature range. Avoid installing the valve where solids or heavy sediment may collect unless a sediment trap or filter is fitted upstream to protect the flap. Follow local codes for backflow prevention where additional protective devices may be required.

## FAQ

### How much does the Check valve FERRO ZZK6 2" cost, and is it available for purchase?

The price is 51.49 € (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/11836431/67236081_large.webp