Flow Control: Technology information & new products for fluid handling engineers

1/19/2010

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Mechanical Diaphragm Metering Pump
Water, Wastewater, & Chemical-Process Apps

Neptune Chemical Pump's Series 7000 mechanical diaphragm metering pump is designed for water, wastewater and chemical-process applications. The pump has been designed without the need for contour plates on the liquid side of the diaphragm. This straight-through valve-and-head design allows for improved flow characteristics and the ability to handle corrosive liquids. The pumps can handle viscosities in excess of 5,000 CP and pump capacity can be adjusted through the use of a micrometer dial while the pump is running. In addition, the suction lift of the pump is capable of pulling sulfuric acid as much as 25 feet from tank to tank (the equivalent of pulling 45 feet of water).The sealless design of the pump eliminates the catastrophic breakdowns that can plague other pump types. Pumps that feature seals are prone to product leakage that allows the sulfuric acid to enter the pump’s gearbox. The result is damage that destroys the pump’s interior and components. Hose-type technologies have been found wanting because the hoses are often not compatible with sulfuric acid, making them susceptible to bursting that can damage the pump’s gearbox.

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