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

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.