New noogler: airlock question

[shirazmn]

Hi
I just got my noogle and I tried to use it today. I bought the contoured cups with airlock, manual pump, no gauge.
There are no instructions, so I just tried to understand how it works.
Am I right in thinking that when I pusk on the metal levers next to the valve, the tubes should pop off (with its connector attached) and the cup should keep the vacuum unaltered?
Right now, when I disconnect the tubes there is a huge loss of vacuum that doesn't get any better (so it's not temporary: air just flows until the cups detach).
Am I doing something wrong? The cups stay up if I keep the tubes connected.

Thank you for your help

 

[Tina A]

You are correct, the is how its supposed to work. Make sure the valves are turned all the way in and the O-ring gets compressed. Years back when I had some when they came, they weren’t all the way tightened. If they still continue to leak you may have to turn them out, put a little white Teflon tape, a little, on the threads in turn it back in to help with sealing the threads

 

[Tina A]

But do not overtighten and strip the threads!