# Backflow Preventer Valve ARCO 1/2" F x 1/2" F (model 191103)

**URL:** https://aio.lv/en/product--arco-191103--11835830
**Data updated:** 2026-03-09 14:49 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** ARCO
**Manufacturer code:** 191103
**EAN:** 8428519072691
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

ARCO backflow preventer valve model 191103 is a 1/2" female x 1/2" female plumbing fitting designed to prevent contaminated water flowing back into the potable supply. It is mounted inline and used in domestic and light commercial installations to protect drinking water from back-siphonage or backpressure. Suitable for use with typical potable water systems where a compact anti-contamination device is required.

## Long description

ARCO backflow preventer valve model 191103 is a compact inline anti-contamination fitting with 1/2" female connections on both ends. Designed for installation in potable water systems, this valve prevents contaminated water from flowing back into the drinking water supply by blocking back-siphonage and backpressure. Its small size makes it suitable for domestic and light commercial installations where space is limited and reliable backflow protection is required.
Advantages
The valve provides mechanical backflow prevention in a compact, inline housing compatible with standard 1/2" plumbing connections. Constructed for straightforward installation, it minimizes the risk of cross-contamination in household and small commercial water systems. The device requires minimal space and maintenance compared with larger assemblies and is appropriate where a simple anti-contamination solution is needed.
Suitable for
 Domestic potable water lines
 Garden irrigation and hose connections where potable supply must be protected
 Small commercial fittings and equipment requiring basic backflow prevention
 Compact installations with limited space
Key specifications
 Connection type: 1/2" female x 1/2" female
 Function: backflow prevention against back-siphonage and backpressure
 Mounting: inline
 Application: potable water systems (domestic and light commercial)
 Design: compact, low-profile anti-contamination valve
How to use
Install the ARCO backflow preventer inline on the supply line using appropriate fittings and thread sealant compatible with potable water systems. Position the unit according to the flow direction indicated on the housing and ensure all connections are tightened to prevent leaks. After installation, check system pressure and conduct a visual inspection for proper seating and any signs of leakage. Periodic checks are recommended to confirm continued operation and to detect wear or blockages.
Usage recommendations
Use this valve only in potable water systems and select compatible materials and sealants for drinking water applications. Where local regulations require certified backflow assemblies or periodic testing by a qualified technician, follow those requirements and arrange professional inspection as needed.

## FAQ

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### 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

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