Hi all. I bought the Â£20 solenoid off ebay; http://cgi.ebay.co.uk/CO2-magnetic-valv ... 0209216803 Works fine switched on during the day, and is programmed to turn off at 8pm. Today was the first proper day it was set up, and at about 8:15pm there was an enormous bang and the CO2 air line had split between the fire extinguisher/reg and the solenoid valve. I'm guessing it was because of an increase in pressure from the CO2 in this section, and it all burst out. Have I done something wrong setting it up? I just don't see how it's supposed to work? :? CO2 keeps coming out the regulator, solenoid stops it, it has nowhere to go, surely this will always happen? I'm a bit confused and could do with some advice/help! Cheers, Paul.