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-228x228.jpg "FOB with John Guest SpeedFit Connectors")
-228x228.jpg "FOB with Male inlet and outlet")
Foam-on-beer detectors, commonly known as beer FOBs, are critical components in professional draft beer dispensing systems. Installed directly on the beer line, a beer FOB automatically stops foam from entering the line when a keg runs empty. This keeps the line filled with liquid beer, reduces product loss during keg changes, and helps maintain stable carbonation and consistent pour quality.
UBC Group USA supplies commercial-grade beer FOBs and replacement parts designed for long-term reliability in high-volume bars, restaurants, breweries, and long-draw draft installations.
Integrating beer FOBs into a draft system provides measurable operational advantages, particularly in installations where line volume and keg turnover are high.
By blocking foam at the moment a keg empties, FOBs eliminate excessive purging and preserve sellable product.
Keeping beer lines full supports stable flow and carbonation, improving pour consistency after each keg change.
Manual reset allows staff to resume service quickly without flushing foam from the line.
In extended-run systems, FOBs play a key role in minimizing losses and maintaining balanced operation across larger line volumes.
Beer FOBs use a mechanical float system to detect foam and shut off beer flow automatically when a keg empties. Once a new keg is connected, the unit is reset to restore dispensing.
Proper connection selection ensures leak-free integration with existing draft systems.
Different installations require different foam-control solutions.
Designed for efficient foam detection and quick reset, commonly used in long-draw commercial systems.
Built for durability in demanding, high-volume environments.
Straightforward mechanical foam control with reliable performance and easy maintenance.
Available with John Guest, threaded, and OD-based fittings to match specific system layouts.
When to Service: Service is recommended if you notice inconsistent shutoff, leaks, or difficulty resetting the unit. Inspection during routine line cleaning helps prevent performance issues before they affect service.
Beer FOBs are widely used in commercial draft environments where foam control and product preservation are essential.
Reduce waste during frequent keg changes.
Maintain steady pours across multiple beer styles.
Support consistent draft performance.
Protect large line volumes from foam intrusion.
Control losses in high-volume systems.
UBC Group USA supplies beer FOBs and replacement parts exclusively to professional customers and wholesale partners throughout the United States. Pricing is available through account-based access on our website.
Our beer FOBs and parts are trusted by draft system installers, bars, restaurants, breweries, distributors, and resellers seeking reliable, commercial-grade foam control solutions.
Most orders ship within 24 hours using UPS or freight carriers, depending on order size and destination.
A beer FOB (foam-on-beer detector) is a device installed on the beer line that automatically stops beer flow when a keg runs empty. This prevents foam from entering the line and keeps it filled with liquid beer.
Beer FOBs use an internal float mechanism that reacts to foam. When foam reaches the detector, the float rises and shuts off flow instantly. Once a new keg is connected, the FOB is reset to resume normal operation.
Yes. By preventing foam from filling the beer line during keg changes, beer FOBs eliminate excessive purging and significantly reduce beer loss—especially in long-draw systems.
Beer FOBs are most critical in long-draw installations, but they can also be beneficial in shorter systems by improving efficiency, reducing waste, and maintaining consistent pours.
Beer FOBs are installed directly on the beer line, typically near the cooler wall or at the start of a long-draw run. This placement ensures foam is stopped before entering the main beer line.
Beer FOBs are available in several configurations, including smart FOBs, stainless steel models, classic or DFC-style detectors, and versions with different inlet and outlet connection types.
Choosing the right FOB depends on beer line size, connection type (such as OD fittings or John Guest connectors), system layout, and whether the installation is short-draw or long-draw.
Common replacement parts include top chambers, floats or diaphragms, vent assemblies, mounting brackets, and drain bottle kits. These components help maintain proper foam detection and shutoff.
FOB parts should be inspected during routine line cleaning or system maintenance. Replacement is recommended if you notice leaks, inconsistent shutoff, difficulty resetting, or reduced foam-blocking performance.
Yes. Beer FOBs are designed to integrate easily into existing draft beer systems, making them a practical upgrade for improving efficiency and reducing waste without rebuilding the entire setup.
Selecting the correct beer FOB and replacement parts is essential for protecting beer quality and minimizing waste. Contact the UBC Group USA team for expert guidance on choosing the right foam-on-beer detector for your draft system.