Typically consuming 18 mA for an airflow of 0.8 l/min. at 4.5V, Clark Solutions Boxer Series S gas diaphragm pumps function at temperatures down to -4°F. Constructed with PPO housings and silicone diaphragms and valves, models are available with a permanent magnet DC motor (4.5 or 6.5VDC) or a core-less motor (6, 9, 12, 18 or 24VDC). The maximum free flow for gases is 1.8 lpm, maximum vacuum is 300 mbar (225mmHg), and maximum pressure is 7.25psi (500mBar).