I have a blitz DD that I bought from a guy on NASIOC. Ran it for a while, but ended up removing it entirely. Seems to work fine, tends to not open unless there's 1 or 2psi involved. The threaded adjustment stud has been replaced with a bolt but it doesn't seem to effect the functionality.
Comes with gasket, recirc fitting, a couple of the little vented filter things, and the regular atmospheric dump. The aluminum flange is welded to a hotpipe but I might be able to cut it off if someone wants it bad enough.
Shitty cell phone pics (really shitty, sorry). Recirc hose is still attached (not pretty, but functional!).
Looking for $100
obo.
edit: i'm stupid -- can a mod fix the thread title to Blitz instead of Greddy. Complete brain fart.