Featuring a durable, low-maintenance solenoid drive equipped with double-ball valves, the NSP Series of solenoid metering pumps (photo) provide consistent and precise dosing of a variety of chemicals, including acids, alkalis, coagulants and flocculants. The compact design and easy-to-use control of the NSP Series provide more efficient operation and shorter setup times for the operator. The small footprint allows it to easily integrate into dosing systems with limited space. The NSP Series is available in manual, analog- and pulse-controlled models. — Neptune Pumps, Grand Terrace, Calif.