Worldwide Recycling Equipment Sales LLC offers the QuestAir (Xebec) Model M3100 pressure swing adsorption unit for sale. The unit is a skid-mounted, high-efficiency methane purification unit complete with packing, rapid cycle valves and 5 no high pressure (80-450 PSIG) vessels with packing currently configured for the separation of carbon dioxide from biogas to increase the methane (CH4) content. The unit measures 34 1/2' long x 12 1/2' wide x 13 1/2' high. The system uses an integrated rotary valve technology in lieu of conventional solenoid-actuated valves, increasing throughput. This unit will process up to 4,000 CFM.