NP Series Sliding Vane Pumps from Blackmer® have been designed to provide efficient transfer when handling asphalt or bitumen. NP Series pumps are ideal for all of the different transfers of raw products from storage into the refinery, and from process to process within asphalt operations, according to the manufacturer. The NP Series pumps can meet the needs of these demanding asphalt-handling applications because they have been designed for the handling of a wide variety of liquids at varying temperatures, pressures and viscosities. This allows the NP pumps to offer maximum versatility while sustaining a high-level of performance and trouble-free operation. NP Series pumps are available in five sizes, with port sizes from 1.5- to 4-inch. They feature flow rates from 5 to 500 gpm (19 to 1,893 lpm) at operating temperatures up to 500 F (260 C), with an optional jacketed pump head for high-temperature operating atmospheres.