Exploration With Different Valve Connections

An important part of a pneumatic system are valves. These were examined to test which is the most air-tight. Depending on the manner of connection (tapping or screwing) a softer or harder material should be chosen. Further, printing circular forms perpendicular to the printing direction, will cause oval-like shapes in soft and flexible materials due to the weight on top of the print. This phenomenon could be observed in a prototype of a John-Guest connection.

Below you can see the cross-sections of the different connections, from top to bottom post threaded connection (used in the one-way valves and gripper), pre threaded connection and a John Guest connection.

Post-Tapped Thread Connection

Pre-Tapped Thread Connection

John Guest Connection