On/off device

[rugbywolf]

I'm trad, but I'm trying to make an on/off valve for a 3mm diameter plastic tube. so I was wondering if any of you wfp guys has any suggestions. The water in this tube will be under pressure.

 

[BenjiRixon]

Have you looked at maybe the on off tap on a pump pressure sprayer?

Possibly worth a look and could be modded?

 

[rugbywolf]

Have you looked at maybe the on off tap on a pump pressure sprayer?
Possibly worth a look and could be modded?

Yes, that's what I have at the moment, but I wanted something smaller