Haha, i just ordered another Appion for myself and stumbled upon this thread. Ive been using a YJ that I've had for years and an Appion. The YJ I recently found leaks past the ball valve. So, appion gets my vote too.
Appion isn't bad. But I like my C&Ds too. They don't leak.
I honestly considered C & D but I could never find any literature about how well they performed under vacuum. Ill keep them in mind for next time since they are a little cheaper.
I honestly considered C & D but I could never find any literature about how well they performed under vacuum. Ill keep them in mind for next time since they are a little cheaper.
C&Ds are good to 200 microns. But that's taking the mfg's word on it. They have not been tested by C&D, but I have no problem holding a 300micron vacuum with them.
Originally Posted by ClimateCntlJohn
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