Additional LogiCO2 safety valve and SMB kit for CO2 systems

What this product offers

This accessory is designed to add an active safety measure to the LogiCO2 system: not only detecting a leak, but also shutting off the gas supply when an alarm occurs.

Its technical value lies in the fact that the solenoid valve acts on the CO2 distribution and operates in fail-safe mode. This means that if power is lost, the valve closes.

In a real installation, this helps reduce the risk of continuing to feed a leak from the cylinder or tank into the distribution line.

Key data

Main features

• Automatic CO2 shut-off Shuts off the gas supply when the sensor detects a high CO2 concentration.
• Fail‑safe valve It closes in the event of power loss, adding a layer of passive safety.
• Compatible with Mk9 and Mk90 Designed as an accessory for LogiCO2 Mk9 and Mk90 CO2 safety systems.
• Blue RJ45 signal output The electronic box connects to the sensor’s blue alarm signaling side.
• Factory setting on high alarm Supplied configured to close on high alarm, with the option to change it to low/pre-alarm via jumper.
• Visual status indicator Includes a red indicator showing that the valve is open.
• Compact format Electronic enclosure 78 x 78 x 37 mm, easy to integrate into technical rooms.
• Installation near the cylinder The manufacturer recommends installing it as early as possible in the distribution chain, near the CO2 tank.

Compatibility and use cases

This kit is intended for CO2 installations where a LogiCO2 Mk9 or Mk90 system is already in place and you want to add automatic gas shutoff in the event of a leak.

It is suitable for hospitality, wineries, breweries, cold rooms, technical rooms and any installation where the CO2 cylinder or tank feeds a distribution network and it is advisable to interrupt the supply in case of alarm.

It also makes sense when the project includes a central unit, sensors, horn/beacon, and other safety accessories within the LogiCO2 architecture.

Installation and considerations before buying

• The solenoid valve must be installed as early as possible in the gas distribution line, close to the CO2 tank or cylinder.
• The electronic box must be mounted in a mechanically protected location.
• The connection is made using the blue RJ45 connector on the blue alarm signaling output side of the Mk9 or Mk90 sensor.
• Before purchasing, confirm the thread of the installation: 1/4”-18NPT.
• Also check the actual working pressure of the circuit, which must be within 0.15 to 30 bar.
• If the installation design is large or has many accessories, it is advisable to review the total system consumption and the power distribution within the LogiCO2 architecture.
• As safety equipment, installation and commissioning must be carried out with technical criteria and final functional verification.

Recommended maintenance and use

The manufacturer recommends an annual functional check. To test the valve, the indicator must be lit, which shows that the valve is open.

The test is carried out by pressing the test button on the SMB junction box: the indicator light must go out and the valve must make a clear clicking sound. After any intervention in the system, it is advisable to repeat this check.