[Karren H]

I don’t know of any real small systems that run on low pressure.   But I have made a lot of DIY systems using PVC pipe.   Even one that used glass fish bowls.   Lol.  But long time ago I made a set for a very small woman who needed help.  They were 3” pipe caps with a hand pump.    I have a 3 inch set and a 4 and a 6 I used for my butt.   But the key if you make anything is making it leak free.   That way once depressurization it will stay on for 4 plus hours.   I sleep with mine on and they don’t come off till I open the valve.   I also don’t use a pimp any more just draw suction from my mouth and it is more than sufficient.  Think my posts are here somewhere and on breastnexum.

Oh, Here are some photos of the system I currently use. https://ibb.co/album/N9MVwC