For Chiki-sama: Nauticam Vacuum Valve M14 (Old Model) - Nauticam

There are minor scratches from use, but it is generally in clean condition. The operation is also fine. The differences from the current model are that it can be attached and detached with general-purpose tools such as Esco EA613XM-3, and the negative pressure release method is screw-type instead of button-type. It can be released by loosening the silver nut inside the lid of the vacuum valve.