One Way Flow Restriction Valve for standard hospital filter (22F/15M)
use pet-g 0.3 mm from transparent flat sheet as Valve membrane 35 mm diameter (valve1_15m_4.stl )
Print valve1_15m_2.stl in rotated position so that flat gloss side will be inside valve
You can seal the valve with a 3D pen (right valve on photo 1 and 3) or electrical tape (left valve on photo 1) so that it will be possible completely disassemble for disinfection
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