sorry, the English version is here: http://www.itim-cj.ro/en/equipment On Mon, Nov 2, 2015 at 8:38 AM, embedded systems wrote= : > We are manufacturing our vacuum systems in our mechanical shop: > http://www.itim-cj.ro/echipamente > unfortunately nothing in English here. > > However, a good valve for vacuum is also a good valve for 200bar. > It does not use balls, but a needle tip. > You can see the picture here: > http://www.itim-cj.ro/images/atelier/mediu/robreglarefinadn2.jpg > > such valve must use a motor for spinning control. > I'm sure you may find something suitable. Will not be cheap. > > good luck, > Vasile > > > > On Sun, Nov 1, 2015 at 8:07 PM, David VanHorn wrote= : > >> I have a vacuum project in the works, and I've just isolated one source = of >> leaks. >> The system needs three shutoff valves. I used ball valves, and I'm >> finding >> that they are leaking. Probably designed for positive pressure I'm >> guessing. >> >> Is there someone on the list with vac experience down around 20 microns >> who >> could suggest relatively inexpensive valves that I could use? The syst= em >> is now built with 1/8 NPT but I could switch if I need to. >> >> These valves just need to be on or off, and they are used for controllin= g >> the flow of air and other gases. No liquids, nothing harsh. >> >> Thanks. >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .