HydroLogic® Evolution-RO™ Barbed Float Valve - 1/2in

Set-and-Forget Reservoir Filling for Evolution-RO Systems

The HydroLogic® Evolution-RO™ Barbed Float Valve gives Evolution-RO system users a simple, reliable way to automate reservoir filling on any tank with a 1/2in barbed inlet. A fully adjustable float arm lets growers set a precise water level, and the valve mounts horizontally or vertically to fit a variety of tank configurations.

Built entirely from plastic and stainless steel — materials HydroLogic specifies as more corrosion-resistant than brass in RO purified water, which is more chemically aggressive toward metals due to its low mineral content — this valve is designed for long-term, corrosion-free performance.

Key Features & Benefits

• 1/2in barbed connection — slides directly onto 1/2in tubing from Evolution-RO systems for a secure, straightforward installation.
• Fully adjustable water level — bend the float arm to set a precise fill level.
• Horizontal or vertical mounting — adapts to your specific tank design and available space.
• All plastic and stainless steel — corrosion-resistant materials specified by HydroLogic as better suited than brass to RO water contact.
• Automatic shutoff: the float closes the valve when the set level is reached, preventing overflow without monitoring.

Who Should Use This

HydroLogic Evolution-RO system owners who want automated, unattended reservoir filling for any storage tank or hydroponic reservoir with a 1/2in tubing inlet.

Compatibility

For: HydroLogic Evolution-RO systems — Fitting: 1/2in barbed — Mounting: horizontal or vertical.

Frequently Asked Questions

Why plastic and stainless instead of brass for RO water?

RO purified water is more chemically aggressive toward metals due to its low mineral content. Plastic and stainless steel components resist corrosion better than brass in long-term RO water contact.

How do I connect this to my Evolution-RO system tubing?

Slide the 1/2in barb into compatible 1/2in tubing from your Evolution-RO system output. A hose clamp is recommended to secure the connection.

When would I use this float valve instead of manually filling my reservoir?

Use this valve any time you want unattended, automatic reservoir top-off — for example, on a remote reservoir, a large storage tank, or any setup where manual monitoring isn't practical. It removes the risk of an overflow from a forgotten manual fill.

Can I use this float valve with a different RO system?

Yes — any system with 1/2in tubing output is compatible with this barbed float valve, regardless of brand. Match the tubing size rather than the system brand when checking compatibility.