Sliding Vane PumpsThese pumps have a number of vanes that are free to slide into or out of slots in the pump rotor. When the pump driver turns the rotor, centrifugal force, rods, and/or pressurized fluid causes the vanes to move outward in their slots and bear against the inner bore of the pump casing forming pumping chambers. As the rotor revolves, fluid flows into the area between the vanes (pumping chambers) when they pass the suction port. This fluid is transported around the pump casing until the discharge port is reached. At this point the fluid is squeezed out into the discharge piping.

Sliding Vane PumpsThese pumps consist of a cylinder and a pumping element mounted on an eccentric shaft. As the eccentric shaft is rotated, the pumping element forms chambers within the cylinder, which increase in size at the intake port, drawing fluid into the pumping chamber. The fluid is transported to the discharge port where the pumping chamber size is decreased. This action squeezes the fluid out into the discharge piping.


Centrifugal PumpsThe simplest type of centrifugal pump is the single stage machine that consists fundamentally of a rotating element, called an impeller, and a casing. Liquid is led to the eye or center of the impeller and is set into rotation by the impeller vanes. By virtue of centrifugal force the liquid is thrown from the rim or periphery of the impeller with a considerable velocity and pressure. The casing, which closely surrounds the impeller, has a volute shaped passage of increasing area, which collects the liquid leaving the impeller, and converts a portion of its velocity energy into additional pressure energy. This casing passage leads to the discharge nozzle of the pump where it is forced into the discharge piping.

Blackmer's Centrifugal Pumps


Peristaltic PumpsThe Abaque pump operates on the peristaltic principle which was patented in 1925 by Mr. Horthaus of France. It is classified as positive displacement pump meaning that a fixed and known amount of fluid is discharged per revolution of the pump with flow independent of discharge head. The pump operates by compressing a specially designed elastomeric hose between a set of two or more shoes attached to a rotor and the internal wall of the pump case or housing. Fluid in the hose is forced from the inlet side of the pump toward the discharge by the squeezing or compressing motion of the shoes on the rotor of the pump as it rotates. This peristaltic action is in some ways similar in nature to that of the human digestive tract.

Blackmer's Peristaltic (Hose) Pumps


Sliding Vane Hand PumpsBlackmer sliding vane hand pumps provide a safe, convenient method of dispensing or transferring non-corrosive liquids from drums, barrels, tanks or vats. They are designed for easy, efficient operation in handling a wide range of liquids in industrial, construction and agricultural applications.

Operating on the same principle as Blackmer power pumps, these positive displacement, self-priming, sliding-vane pumps provide steady, non-pulsating flow at easy turning speeds. The sliding vanes self-compensate for wear to maintain high-suction lift and are easily replaced at low cost after years of service.

Blackmer's Sliding Vane Hand Pums