Pressure sensor for force carbonating

Hi,

I’m looking to make my force carbonating more automated. It’d be great if I can just set this to 15psi and when it reaches that pressure it closed a solenoid valve or a motorized ball valve. This looks like it might work if I could find some sort of pressure transducer? Has anyone done this?

I found this old topic on the old forum this is pretty much exactly what I’m looking for.

http://forum.brewpi.com/discussion/513/pressure-control

any help would be most appreciated.
Mike