Duo Valve

Duo Valve – Combination Non-Return Isolating Valve
Available Variants: 12mm to 20mm

The Duo Valve is a compact, high-performance solution that combines two critical plumbing functions in one unit: non-return (check) valve and isolating valve. Designed specifically for the installation of pressurised water heaters, this valve ensures efficient system protection while simplifying the installation process.

Its one-piece design eliminates the need for separate valves and fittings, reducing the potential for leaks, installation errors, and unnecessary maintenance. The non-return component is tamper-proof, offering added safety, while the isolating feature provides convenient shut-off control.

Features and Benefits:

• Dual Function: Combines isolating and non-return valves into one streamlined unit
• Space-Saving Design: Integral construction eliminates the need for multiple fittings
• Leak Reduction: Fewer joins mean reduced chances of leaks or connection faults
• Tamper-Proof: Secure non-return valve prevents backflow without risk of tampering
• Optional Model: NRI50S 15mm Trio Valve version includes an integrated line strainer
• Orientation Flexibility: Functions effectively when installed horizontally or vertically
• Durable and Safe: Made from dezincification-resistant (DZR) brass
• Standards Approved: Complies with Australian Standards for potable water supply

Applications:

• Installation of electric or gas pressurised hot water systems
• General residential and commercial potable water systems
• Any situation where backflow prevention and shut-off control are required in a compact form

Choose the Duo Valve for a reliable, compliant, and efficient valve that simplifies your water heater installations without compromising safety or performance.