Thomas Products” Series 2665/2685 WOB-L piston pumps are specially designed to stand up to the rigors of use in coin-operated tire inflation pumps and other air-vending applications. Series 2665 pumps are for use where fan guards are not required. Series 2685 pumps include stainless steel fan guards. Constructed of light, rugged die-cast aluminum, the pumps incorporate epoxy-coated head and valve plates for exterior corrosion protection and a special Teflon piston seal that remains flexible even in cold temperatures. Stainless steel valves and permanently lubricated bearings further enhance reliability. Oilless, nonlube piston and cylinders prevent air-flow contamination. A pressure-relief valve is also included. Thermally protected AC motors are of a permanent-split capacitor design. Twin fans provide efficient cooling of the motor and cylinder. Maximum flow for pumps equipped with 115 VAC 60Hz single-phase motors is rated at 3.68 CFM (104.2 LPM). Maximum flow for pumps equipped with 220-240 VAC 50Hz single-phase motors is 3.23 CFM (91.5 LPM). All Series 2665/2685 pumps provide up to 100 PSI (6.9 bar) of pressure.