Suited for continuous running, Series 8003 WOB-L is available for pressure and vacuum applications. Balanced design of piston pump provides oil-less operation to prevent air contamination. Available with 6, 12, or 24 Vdc Class E insulated motors, they use Teflon piston seals, heat-resistant plastic housings, and elastomer valves. Open flow is 0.1 cfm, maximum intermittent pressure is 29 psi, and maximum vacuum rating is 17.4 in. Hg.