Meeting the huge range of applications that we encounter on a daily basis is a challenge. As a supplier, it's critical to have a portfolio of products to effectively satisfy those applications.
Invented in 1899 by Robert Blackmer, the Blackmer Sliding Vane pump revolutionized the positive-displacement style pump industry. At the heart of a Blackmer is the sliding vane technology in which vanes slide in and out of a central rotor as the pump moves in an eccentric bore. This creates pumping chambers that carry material through the pump until they reach the discharge port at which point the chambers are collapsed and material is evacuated from the pump. The beauty of this design is that the pump does not lose efficiency as the vanes wear; they simply slide further out of the rotor to maintain the same volumetric efficiency as when new. Contrast this with a gear pump which, as it wears, loses significant efficiency as the gear teeth wear.
By design Blackmer's pumps are able to self-prime and are exceptional performers when pumping "thin", low-viscosity fluids. They are commonly used on solvents, paints, fuels, LPG, alcohols, and de-icing solutions and are available in a number of body materials as well as specially-hardened internals to handle abrasion.