Thanks for the replies.
Also, I don't mind using two pumps (say, one for DC and one for the AC pressure). Piston is a valid option, but I am not sure I can find off-the-shelf one. Are you familiar with one?
As for the flow rate: I thought of having certain constant leak in the system and...
Hi,
I am looking for an air pump which can provide (1) a stable DC pressure of 0 - 300 [mmHg], and (2) an AC pressure(on top of the DC pressure) with an amplitude of 0 - 30 [mmHg] ahttp://www.eng-tips.com/threadminder.cfm?pid=407t a frequency of 0 - 100 [Hz].
All these parameters (DC pressure...