Rola-Chem 543818 Black Pro Series 300 Peristaltic Pump with Cord 120V 38 GPD The NEW PRO Series 300 Peristaltic Pumps maintain the best of the Rola-Chem Pro Series legacy* while improving primary function and simplifying set up. The Pro Series 300 retains a 30psi rating and versatile 18-ft. suction lift. operate on 9-minute cycles and are available in 120V or 240V corded or permanent wire configurations with maximum amps–2.5