Neptune has expanded the range of its Series 500 dia-Pumps with explosion-proof motors and NEMA 7 stroke positioners for use in hazardous environments. The hydraulically-actuated diaphragm pumps provide leak-free metering of a variety of corrosive, flammable or hazardous liquids. The explosion-proof model is ideal for use in oil-and-gas, CPI and other extreme environments. The pumps feature check valves that are removable for inspection or cleaning without disconnecting piping. - Lansdale, Pa. - (888) 3-NEPTUNE - www.neptune1.com