Interlock System Accessories
Alongside gas vent interlock panels and solenoid safety shut-off valves, we offer a specialised selection of interlock system accessories designed to help engineers build and maintain compliant safety systems in environments such as commercial kitchens, catering facilities, and plant rooms where gas appliances must be interlocked with mechanical ventilation. Our range includes ventilation monitors, gas and CO detectors, knock-off switches, warning indicators and more.
At BES, no matter the project at hand, you can count on products that are built to last and stocked for fast delivery. Plus, with free returns, shopping for interlock system products online has never been easier.
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Interlock System Accessories You Can Trust
The accessories in this range are designed to support the monitoring, detection, and emergency shutdown functions required within gas interlock safety systems.
Ventilation Monitors
Ventilation monitoring devices help ensure mechanical extraction systems operate correctly before gas appliances are allowed to run. Our selection includes units such as the Flamefast Ventilation Motor Current Monitor, the Flamefast CO₂ & Temperature Monitor, and the Intelligas Fan Current Sensor, which are used to verify that extraction fans are running and airflow conditions are suitable.
Gas Detectors
We stock the FGS Flamefast Natural Gas Sensor and the FGS Flamefast LPG Sensor, both designed to integrate with gas safety systems where gas detection forms part of the interlock protection setup.
Knock-Off Switches
Equipped with a clearly visible manual shut-down point for gas and electrical systems, we offer these popular emergency knock-off switches: the Emergency Electrical Knock-Off Switch 240V and the Emergency Electrical Knock-Off Switch 240V Locked. These switches are widely used in commercial kitchens and catering facilities.
CO Detectors
The FGS Flamefast Carbon Monoxide Sensor in our range can be used to monitor CO levels and connect with gas interlock systems or alarm controls where required.
Carbon Dioxide Detectors
CO₂ monitoring is commonly used in areas where combustion appliances or high occupancy levels may affect air quality. The Intelligas CO₂ Detector is designed to monitor carbon dioxide levels and provide signals that can be used within ventilation or safety control systems.
Differential Pressure Switches
Air pressure monitoring can also be used to confirm correct operation of ventilation systems. The Air Pressure Switch available at BES allows engineers to monitor pressure differences within ducting or airflow systems to help verify that extraction systems are functioning as intended.
Interlock Kits
For installations requiring monitoring the current of extraction fans, the Gas-Minder CS-2 Fan Current Sensor offers a dedicated solution. It is used in gas interlock systems to detect if the fan is operating and to confirm that ventilation is active before gas appliances are turned on.
Thermal Fuses
Thermal protection devices are employed to isolate systems when high temperatures are detected. The PowerLink Thermal Fuse can be incorporated into safety circuits requiring temperature monitoring.
Thermal Links
Thermal links act as a safety device, disconnecting or triggering shutdown when a specified temperature threshold is reached. The Electro-Thermal Link is commonly used in safety systems.
Why Shop Interlock System Accessories at BES
For more than five decades, BES has supported engineers working on gas installations with reliable products and specialist components. With trusted brands such as Flamefast, Gas-Minder and Intelligas available across our interlock range, engineers can source dependable parts backed by excellent customer reviews and free technical advice from our experienced team.
Whether you're installing a new ventilation interlock system or maintaining an existing one, BES offers the essential accessories to ensure gas safety systems function properly. Browse the complete selection below.
FAQs
How does a fan current sensor work in a gas interlock system?
A fan current sensor monitors the electrical current drawn by an extraction fan. When the fan is running, the sensor detects the current flow and signals to the interlock system that ventilation is active. If the fan stops or fails, the system will stop gas appliances from operating.
What is a knock-off switch used for?
A knock-off switch provides a manual emergency shut-off point for gas or electrical systems. It is typically installed in an easily accessible location so that equipment can be quickly isolated in the event of an emergency or unsafe situation.
Why are CO₂ detectors used in commercial kitchens?
CO₂ detectors monitor carbon dioxide levels in enclosed spaces where combustion appliances operate. Checking air quality is essential to spot ventilation problems and confirm that extraction systems are working correctly.
Are gas detectors required in gas interlock systems?
Gas detectors are not always mandatory, but they are commonly installed as they can detect combustible gases and trigger alarms or shutdown procedures if gas is detected.
What is the purpose of a ventilation monitor?
A ventilation monitor verifies that mechanical extraction systems are functioning properly. Interlock systems frequently require proof of ventilation before permitting gas appliances to operate.
Where are gas vent interlock systems commonly installed?
Gas vent interlock systems are typically installed in environments where gas appliances need to operate alongside mechanical ventilation. This includes commercial kitchens, catering facilities, laboratories, and plant rooms.