Has anyone implemented an automated shutoff/on valve between their CO2 tank and regulator? I would like it to turn on to allow gas flow to my kegs at at certain time and turn off at a certain time. This would coincide with my drinking hours during the day. I have seen some products for aquariums and greenhouses on the web that could be adapted. The purpose is to minimize undetected gas leaks. I sometimes forget to turn off my main tank valve at night.