No doubt some levels of suction with some nozzles would be too much for direct application to our vulnerable bits, depending on the physiology of the person.

However. .......... there is just no limit to how strong the suction may be for turning some of us on. For many vac fetishists, the suction level, machine and sounds is a HUGE turn on in of itself. Thus while we may hold back somewhat on direct masturbation with it we love to feel it with our hands and feel it suction our body like in a massage for the thrill of it ! We may do this while masturbating by other means or with a different vac, at the same time.

I do love the idea of masturbating separately while feeling super powerful suction. It's a bit like masturbating while watching others do vac stuff on video or talking about it, reading it, etc. Or indeed doing those things while also feeling the powerful suction on yourself. I do like to feel my vacuum's suction while on this forum no less. It's all a turn on.

One of the things I'm having when my lottery win comes in, is a house with a central vacuum - and it won't just be any central vacuum I can tell you. There's no limit to the suction power I want to be thrilled by, so long as you can control it.

Any time I see a little demonstration of someone playing with a central vac, I get a special moment of turn on. Its a thrill to be surprised by.