Thomas PumpThe 907Z Series pressure/vacuum oil-less diaphragm pump from Thomas provides mobility with a quiet, efficient low-vibration design that utilizes die-cast aluminum components for durability—all combined with an efficient, long-life 24V brushless DC motor. Specifically designed for fuel cell applications, the diaphragm pump also features oil-less operation, stainless steel valves, wetted parts treated for corrosion protection, and is RoHS compliant. Maximum continuous pressure is rated to 25 PSI (1.72 bar), with maximum vacuum to 21.2 in.Hg (717 mbar).