Gas Interlock System

The UCI GICS5120+ is a gas interlock system that manages the safe operation of the gas supply to appliances to protect the area from dangerous gas build up and isolates it should the commercial kitchen ventilation system not operating within the a predetermined levels.

The UCI GICS5120+ fully meets the requirements of BS 6173. Installation and usage is made simple so not to over complicate things. The cost of ownership is low compared to similar systems manufactured by others on the market.

BS6173 says...

"It is important to make sure all natural and mechanical ventilation systems are working effectively. The installer should have fitted the appropriate interlocking system between any mechanical ventilation system and the operation of gas appliances so that failure of the system causes the gas supply to them to be shut off. Installation of manual bypasses to such interlock
systems is not permitted."

Operational Manual


  • Height 200 mm
  • Width 120 mm
  • Depth 75 mm

Technical Specification

  • Power Supply 230VAC
  • Power Output (Gas Solenoid) 230VAC
  • IP Rating waterproof (Providing rear entry sealed)
  • Approval CE

When should a Gas Interlock system be used

  • if you have a power-operated flue system for a gas appliance in your commercial kitchen. The British regulation BS6173 states that you should install a safety-lock system.
  • This is a requirement if a new ventilation or extraction system is fitted
  • A new gas-line pipework or kitchen layout
  • Any category B appliance such as combi-oven, grills, griddles and fryers. This should also be fitted to existing layouts should there not be one present.


  • PRESSURE & CURRENT monitoring in one unit
  • Digital display of error indication
  • Gas ON/OFF indication
  • Audible signal of ventilation system failure
  • Manual reset button
  • Integral current sensing or air pressure sensing via pressure switch
  • Additional inputs for remote stop button, Co2 sensor or fire alarm shut off
  • Easy to clean, waterproof front.
  • 12 month parts warranty


Gas Solenoid ValveSizes 1/2" to 2" works in conjunction with gas interlock systems to shut off gas supply in emergency situations.


emergency stop buttonRemote stop button box for gas interlock system


differential air pressure switchUsed to ensure airflow with air sensing gas interlock systems

We will be launching our new Gas Interlock System with Co2 monitoring in August 2017 please ask us for more information.

Note 3 by the Catering Industry: Under GIUSP, an installation with CO2 levels between 2800 and 5000 ppm is to be classified as “At Risk” and if the level is above 5000 ppm it is to be classified as “Immediately Dangerous” (see Figure 3)

Guidance for gas engineers to the application of relevant sections of IGEM/UP/19 in catering establishments

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