# Check flap valve ARCO 3/4 DN20 (model 190204) — non-return valve for fluid systems

**URL:** https://aio.lv/en/product--arco-190204--11836107
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Kitchen & Bathroom Faucets
**Manufacturer:** ARCO
**Manufacturer code:** 190204
**EAN:** 8428519066812
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arco-190204--11836107

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Flap check valve ARCO model 190204, size 3/4 (DN20), EAN 8428519066812. Designed as a non-return valve (check valve) to prevent backflow in fluid and plumbing systems. Suitable for installation in pipelines with DN20 connections; used in water, heating, and general fluid transport applications where one-way flow control is required.

## Long description

The ARCO flap check valve model 190204 is a 3/4 (DN20) non-return valve designed to prevent reverse flow in fluid systems. Constructed for installation in pipelines with DN20 connections, this valve provides one-way flow control suitable for water distribution, heating circuits and general fluid transport applications. Its compact design is intended for in-line mounting and integration into existing plumbing and mechanical assemblies where backflow prevention is required.
Advantages
The flap design ensures rapid closure in the event of reverse flow, reducing the risk of water hammer and minimizing leakage past the seat. The valve is sized for DN20 pipelines, offering a balance of flow capacity and compact dimensions for tight installations. Materials and internal geometry are selected to provide reliable operation in common water and heating environments and to require minimal maintenance under normal conditions.
Suitable for
Domestic and commercial water supply lines with DN20 connections
Heating system circuits where one-way flow is necessary
Piping systems for general fluid transport that require backflow prevention
Integration into pump discharge lines or branch runs to prevent reverse flow
Key specifications
Size: 3/4 (DN20)
Function: Non-return (check) valve with flap/disc mechanism
Installation: Inline, for DN20 pipe connections
Application media: Water and common heating fluids
Typical uses: Water distribution, heating circuits, pump discharge protection
How to use
Install the valve in the piping with the flow direction matching the arrow on the body so that the flap opens toward the outlet. Ensure correct pipe alignment and secure threaded or fitted connections according to the system's installation standards. After installation, pressurize the line and check for leaks around joints; verify that the valve closes when flow reverses. Routine operational checks can be performed during scheduled maintenance to confirm that the flap moves freely and seals effectively.
Usage recommendations
Use this DN20 flap check valve in systems carrying clean water or compatible heating fluids. Avoid installing the valve where heavy particulate contamination, freezing conditions, or aggressive chemicals are expected unless additional filtration or protection is provided. For reliable performance, follow local plumbing codes during installation and include accessible shut-off points to isolate the valve for inspection or replacement.

## FAQ

### How much does the Check flap valve ARCO 3/4 DN20 190204 cost, and is it available for purchase?

The price is 15.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 40 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 08.07.2026 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 ARCO 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 ARCO 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/11836107/67235802_large.webp