NP Series Sliding Vane Pumps

Blackmer's NP Series sliding vane pumps have been designed to provide efficient transfer when handling asphalt or bitumen.

• For all of different transfers of raw products from storage into refinery, and from process to process within asphalt operations
• Designed to handle wide variety of liquids at varying temperatures, pressures and viscosities
• Available in five sizes, with port sizes from 1.5 to 4 inches
• Flow rates from 5 to 500 gpm at operating temperatures up to 500°F with an optional jacketed pump head for high-temperature operating atmospheres
• Can handle viscosities ranging from 30 to 20,000 ssu at differential pressures up to 150 psi with standard construction
• Adjustable relief valve protects against excessive operating pressures
• Sliding-vane operating principles guarantee consistent volumetric performance, even after significant in-service time
• Self-priming and dry-run capabilities