Fused valve. Think of it as a sprinkler head for your CO2. A specific melt temperature’ blob in the end of the valve, gets to that temperature, solder melts and the juices start flowing. Plumb your well sealed and higher pressure rated CO2 piping into engraver, install the ‘fused valve’ on the inside and the bottle at the other end of the pipe. Turn bottle on, leave it on. (you can turn it off when you’re done, or leave it on if the system is well sealed) If there’s ever a fire, the ‘sprinkler head’ pops and the fire gets hosed with XXXXpsi straight into the cabinet.
Solenoid: Same thing to install it, you just have an open pipe in the cabinet and the solenoid between the end and the bottle. The CO2 gets released if your solenoid gets activated. That solenoid could get it’s signal from a complex system of electronics and/or sensors, a single fusible link or even a panic button. A fusible link is just 2 metal plates soldered together with specific melt temperature solder. If the temperature goes above XXX, the solder melts and releases the tension of a spring to pull a pin, flip a switch or any number of mechanical or electrical activations. Power to the panic button, push it and it completes the circuit and pop, your fire is out. In the case of the solenoid, whatever you have that would turn that solenoid ON would do it. I’d caution to use the simplest and most secure method with a solenoid, since a wrong move, change of state (even accidentally) empties your bottle. Power OFF to it, and a power ON state opens the relay. If you power it the wrong way, a power outage, like turning the machine off (ooops!) and you’re filling the bottle again tomorrow.
Simple is always best, and human nature being what it is, sometimes simple is still too complex. Staying at the machine with a nearby juice bottle ready if needed is nearly dummy proof. Nearly.
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I tried to upload the link but I got a “link not authorised” message.
Its the system used on the Tyvok S1 which is viewable on ytube and priced around $46 for two and they are placed on the gantry and elsewhere. I think they recommend having around six of them.
Just paste it into the Reply. You cannot upload a shortcut.
Something similar is sold by Amazon [US] as ’ Automatic Fire Extinguisher-Car Fire Extinguisher-’ for $30. It sez no residue which is good. Gene