why not look into the low consumption pumps used for solar water heating?the one i saw in action ran on low dc voltage straight off a solar cell and was the same size as a car windscreen\shield washer pump.Air being a fluid,the pump seals 'should' work at low pressures. ----- Original Message ----- From: "Russell McMahon" To: "Microcontroller discussion list - Public." Sent: Tuesday, November 22, 2005 10:29 PM Subject: Re: [OT] searching for a 9-12VDC air pump > > I'm looking for a small, QUIET air pump, running on 9-12VDC, lowest > > possible current consumption as it may end up being in a handheld > > device. Pretty much all the info I have right now, doesnt need to > > pull/push alot of air, mainly just to evacuate gas from a tube. > > Other links look good. > A peristaltic pump seems the way to go. > However, consider the possibility of an aquarium pump intended for > mains 50 Hz Ac operation with a pulsed supply. I haven't yet tried > this but will be doing so 'in the next while" for an application I > have. For a one off a COTS unit may be best for you but the aquarium > pump has the advantage of availability and (fwiw) probably of cost. > > RM > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist