# ARCO 504510 Safety Check Valve for Heater, 1/2 inch, 9 bar

**URL:** https://aio.lv/en/product--arco-504510--12518747
**Data updated:** 2026-06-12 15:48 (EEST)
**Category:** Other goods
**Manufacturer:** ARCO
**Manufacturer code:** 504510
**EAN:** 8428519080986
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arco-504510--12518747

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

The ARCO 504510 safety check valve is designed for water heaters, ensuring system protection by maintaining pressure at 9 bar. Featuring a 1/2 inch connection, this valve prevents backflow and manages overpressure, essential for the safe operation of domestic hot water systems. Built for durability and reliability, it is a critical component for maintaining heater integrity and preventing damage from pressure spikes.

## Long description

The ARCO 504510 safety check valve is a high-quality component engineered specifically for domestic water heaters. It serves as a critical protective device that maintains system integrity by regulating internal pressure and preventing the backflow of water into the supply line. Constructed from durable brass, this valve is designed to withstand the demanding conditions of hot water systems, ensuring long-term reliability and safety for your household plumbing infrastructure.
Advantages
This safety check valve offers robust protection against overpressure, which is essential for preventing potential damage to water heaters caused by thermal expansion. Its brass construction provides excellent resistance to corrosion and mechanical stress, ensuring a long service life. By integrating both safety and check functions into a single compact unit, it simplifies the installation process while providing consistent performance at a rated pressure of 9 bar.
Suitable for
Domestic hot water heater systems
Residential plumbing installations requiring backflow prevention
Systems operating at a maximum pressure of 9 bar
When it may not be suitable
This valve is not intended for use in high-pressure industrial systems that exceed the 9 bar rating. It is also not suitable for applications involving aggressive chemicals or fluids other than potable water, as the brass material may react with certain substances.
Key specifications
Material: Brass
Connection type: 1/2 inch outer thread and 1/2 inch internal thread
Maximum pressure: 9 bar
Function: Safety and check valve
How to use
The valve should be installed on the cold water inlet of the water heater. Ensure that the flow direction indicated on the valve body aligns with the water supply direction. Use appropriate plumbing sealant or tape on the threaded connections to ensure a watertight seal. It is recommended to tighten the connections carefully using a suitable wrench to avoid damaging the brass threads.
What to consider before purchase
Verify that your water heater system operates within the 9 bar pressure limit.
Ensure the 1/2 inch thread size is compatible with your existing piping.
Check local plumbing regulations regarding the installation of safety valves.
Usage recommendations
Regularly inspect the valve for any signs of leakage or mineral buildup to ensure it remains operational. If the valve frequently discharges water, it may indicate an issue with the system pressure or the expansion vessel, and professional inspection is advised.

## FAQ

### How much does the ARCO 504510 Safety Check Valve for Heater cost, and is it available for purchase?

The price is 5.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 33 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 Friday 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

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