A water-flushed mechanical seal or packing is available. The pumps offer steep performance curves, nonoverloading power characteristics, heavy-duty power frames and a flushless mechanical seal. Triton screw centrifugal pumps from Vaughan Company handle thick biosolids, large or stringy solids, shear-sensitive fluids and delicate or highly abrasive materials. The back pullout design permits removal of the entire pump assembly for maintenance without disturbing piping connections. Close-coupled configurations can be mounted vertically when space is at a premium. Three hundred sixty-degree mounting capability extends installation options. They offer a choice of a close-coupled NEMA electric motor or frame mounting with couplings to electric motors, engines, steam turbines or belt-driven motors. A broad range of sizes and configurations are available. 205/655-7466 Centrifugal PumpsĮ, F and G Series heavy-duty end suction centrifugal pumps from Griswold Pump Company come in capacities to 3,000 gpm and heads to 310 feet. A flanged bearing provides radial support at the upper shaft. It uses a single-row spherical roller and self-aligning combination radial/thrust lower support bearing. The pump provides variable capacity at constant speed. Pumps can be set at a fixed angle, or the lower end can be supported by a hoist to vary the pump angle and for maintenance access. It transports liquid inside a stationary tube, simplifying design and eliminating grouting. The Tube-mounted screw pump from Schreiber incorporates the Archimedean screw pump concept in a self-contained unit for ease of installation and construction. No variable-speed electrical controls are required. The pumps offer low operating costs, low maintenance, nonclogging operation and minimal head. Patterned after the Archimedean screw, the pump’s assembly consists of a simple screw, upper bearing, lower bearing and drive arrangement. They lift large volumes efficiently at low head at any treatment stage. Screw pumps from Lakeside Equipment Corporation offer built-in variable capacity that automatically adjusts the pumping rate and power consumption to match incoming flow while operating at a constant speed. Get Pumps articles, news and videos right in your inbox! Sign up now.

Archimedes screw pump design manual