[Tai28]

What pumps can run off of low pressure?(500-650) more of mid pressure...

[drgonzo]

Most pumps *can* run on that pressure, but it will be out of the sweetspot for just about any pump. There are just not too many that run at peak performance in that specific pressure range.

Basically just about any poppet type valve can run that pressure -- sheridans, nelsons, hybrids like sterlings. Spool/dump chamber type guns where the pressure sets the velocity are the ones that can't run that pressure, pump mags, mq pumps, I think the thumper.

[SKI008]

Most regged pumps sweetspot at 300-350ish psi if memory serves (going by the CCM's I've owned) so you can use a low pressure tank for those. I've had no trouble running my T2 on a 400 psi Ninja. Nelson designs usually require high pressure air.

[Sherbet]

http://www.arrow-precision.com/Arrow..._stp_info.html

"If you are using regulated air, set the output pressure of the regulator for 450 /500 psi."