The file 'Non-return Valve 3D Printer Model' is (STL) file type, size is 2.6MB.
This thing is a one-directional valve that prevents backward flow. The functional part is a piece of rubber which shuts off a small hole depending on the airflow direction.
Many sockets are available. Besides M5 and 4 mm (with or without locking ring) sockets, a bike pump socket can be installed. This thing is ideal for inflating PET bottles with a bike pump.
Oct 30, 2018: Added version 2 of bike pump socket, with slightly longer design and grooves around the nozzle to prevent getting loose. Also added version 2 of valve body with thinner cross lines to make seal more reliable.
Clip_4mm.STL | 98.3KB | |
Socket_4mm.STL | 737.4KB | |
Socket_4mmLock.STL | 729.7KB | |
Socket_4mmLockSupport.STL | 757.2KB | |
Socket_Bike.STL | 828.1KB | |
Socket_Bike_V2.STL | 1.6MB | |
Socket_M5.STL | 2.6MB | |
ValveBody.STL | 510.2KB | |
ValveBody_V2.STL | 503.2KB |