# Check valve FERRO ZZ4, 5/4" (1¼") threaded connection

**URL:** https://aio.lv/en/product--ferro-zz4--11835976
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** FERRO
**Manufacturer code:** ZZ4
**EAN:** 5903738209897
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.99 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 15.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-zz4--11835976

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

FERRO ZZ4 is a 5/4" (1¼") threaded check valve designed to prevent backflow in plumbing systems. Manufactured for installation in pipelines, it features a compact body and standard threaded connections for quick fitting. Suitable for domestic and light commercial water supply and heating applications where reliable one-way flow control is required.

## Long description

FERRO ZZ4 is a 5/4" (1¼") threaded check valve designed to ensure one-way flow in water supply and heating systems. The compact body and standard threaded connection enable quick installation in pipelines where backflow prevention is required. The valve is intended for domestic and light commercial applications and supports uninterrupted forward flow while preventing reverse movement of water.
Advantages
The straight design and threaded 5/4" connection make the FERRO ZZ4 simple to install and replace in existing piping. Its compact dimensions reduce the need for additional support or space, and the internal mechanism provides reliable backflow prevention without continuous manual adjustment. Materials and construction conform to common plumbing requirements for potable water and heating circuits, offering stable performance under normal operating conditions.
Suitable for
 Domestic potable water supply lines
 Heating systems and radiators in residential buildings
 Light commercial water installations
 Inline installation where space is limited
Key specifications
 Connection type: threaded
 Nominal size: 5/4" (1¼")
 Flow direction: one-way (check valve)
 Body: compact inline design suitable for pipeline installation
 Application medium: water for supply and heating systems
How to use
Install the FERRO ZZ4 in the pipeline in the correct orientation according to the flow direction indicated on the valve body. Ensure threads on mating pipes are clean and apply appropriate sealant or tape compatible with potable water if required. Tighten the valve using suitable tools without excessive force to avoid damaging threads. After installation, pressurize the system slowly and check for leaks; verify that the valve allows forward flow and prevents reverse flow during pressure changes.
Usage recommendations
Use the valve in systems where fluid temperatures and pressures remain within typical domestic water and heating ranges. Periodically inspect threaded joints and the valve for signs of leakage or corrosion. For installations with aggressive fluids, extreme temperatures, or high pressures, confirm material compatibility and consult technical documentation or a professional installer.

## FAQ

### How much does the Check valve FERRO ZZ4 5/4" cost, and is it available for purchase?

The price is 18.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 30.06.2026 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/11835976/67235687_large.webp