Thomas PumpThe Thomas 230 Series is a brushless DC WOB-L air compressor designed for medical and other applications requiring a compact, lightweight pump with variable output. The pump is extremely small (3.8 inches high by 2.64 inches wide by 3.63 inches long) and weighs 1.2 lbs. In addition, the 230 Series features variable output (1,000–3,000 RPM) utilizing an efficient brushless DC motor, an enclosed crankcase for reduced sound (40 dB(A)), and Thomas’ WOB-L piston technology. Maximum flow is .50 CFM (high speed) and maximum pressure is 30 PSIG. – www.gd-thomas.com