Low pressure water tap

thingiverse

This is a straightforward little water tap/flow regulator, ideal for hydroponics, but its uses extend far beyond that field. You shouldn't expect to apply high pressure to the tap. The body of the tap fits snugly inside a 16x1.8mm stiff water tube (the inner diameter is approximately 12.20 mm), then exits through a 5.5mm tube with an outside diameter, allowing for any small tube to be fitted over it - either heat it up to slip it on or glue it in place. Once printed, the top can be threaded with an M8 tap to secure an M8 bolt. To ensure a watertight seal, I added a small rubber O-ring at the base with an outside diameter of 8mm and 1mm thickness; any similar size should fit. If leaks persist (I didn't experience this issue), try flattening the end of the bolt for a secure, leak-free connection.