It might be 3 bucks, but it's rated at 25"Hg, 150PSI, 385F and it has a cracking pressure of .5PSI: that's pretty much all the qualities required to work with the DASC.
Since I'm using a 5/16 ID hose all the way to the intake, the "normal" valve won't fit anymore since it's meant for a hose with 3/4" ID. A 5/16" was to hard to find so 3/8" is just close enough to fit good.
It should be in next week or so... I didn't feel like spending $30 for at most 3/4 (that's three quarters) PSI...