The Sandpiper S20B1ABBANS600 is a 2" metallic top-discharge diaphragm pump designed for intermittent, on-demand applications. It features a 0.42-gallon (1.59 L) displacement per stroke and handles solids up to 0.25" (6 mm). Constructed with aluminum wetted materials and nitrile check valve seats, it offers a maximum flow rate of 0.42 GPM (1.59 LPM) and weighs 70 lbs (31.75 kg).