Vacuum setup

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I planned to use a charging hoses with integrated valves to control provide and control the vacuum in all parts of system.

But I found that the valves can’t hold the vacuum and let the air in 🙁 So I cut the valves and currently I use only the hoses mounted on a glass tube.. I will probably build the setup on a glass joints and glass valves with vacuum grease. It is not the simplest way, but it is cheap and should reliable.