One new design can pump up to 80 percent solids and flows up to 450 gpm with a single 4-inch-diameter peristaltic pump.
There are numerous factors to consider to ensure the best performance with this technology.
While this type of pump is ideal for high-viscosity liquids, it can present users with unique challenges.
One pump manufacturer provided a major paper mill with what could become a new industry standard.
The 77 pumps at the Puralube Zeitz site leverage progressing cavity and centrifugal pumps to recycle used oil into more than 140,000 metric tons of base and mineral oil products.
Customized equipment helped an energy company achieve greater operational efficiencies, lower maintenance and improved diluent injection control.
These specialized pumps assisted one company in developing a new water disinfection device for municipalities.
These pumps require regular attention, so end users should carefully consider the design options.
The addition of a cardan joint helps resolve wear and failure and delivers improved angularity and smooth transmission of radial and axial loads.
Because these pumps require regular attention, end users should carefully consider the design options.
Q. What information is available regarding bearing minimum loads for pumps? A. All rolling element bearings require a minimum applied load. This ensures that normal elasto-hydrodynamic operation...
Selecting this equipment for dewatering decreased maintenance requirements, 
saving more than $160,000.
These pumps do not shear, and they provide consistent flow of fluids of different viscosities.
Smart conveying technology improves uptime at a coal-fired power plant.
New Progressive Cavity Pump Technology
Progressive cavity (PC) pumps are commonly referred to in industry as mono-pumps, screw pumps, eccentric screw pumps or worm pumps. All are positive displacement pumps. The inventor of the progressive...
Anaerobic Digestion and Power Generation
New progressive cavity pump technology aids in anaerobic digestion system.With economic problems and concerns about the environment, one project in Ohio plans to help both issues. More jobs, clean...
Smart Conveying Technlogy Introduced in September 2010, seepex's Smart Conveying Technology allows the stator to be re-adjusted giving longer stator and rotor life compared to conventional designs....
Enterprising biosolids pump manufacturers are finding abundant new opportunities in the biosolids segment. With wastewater management becoming a key issue, everyone from truck owners to sludge...
Pumps and Systems, February 2007Natural gas is a clean-burning energy source well suited as a boiler fuel, vehicle fuel, and heating residences as well as large structures. Coalbed methane (CBM) is a...
Pumps and Systems, June 2009Combined system overflows (CSO) put a significant toll on the Great Lakes, especially considering all the cities that discharge into them: Milwaukee, Chicago, Toledo,...
Pumps & Systems, February 2009Since the introduction of progressive cavity (PC) pumps (see Figure 1) many years ago, stator maintenance has been a concern of plant operators and maintenance...
Pumps & Systems, September 2007The concept of using a positive displacement pump to transfer dewatered biosolids, commonly called sludge cake, is not new. However, the designs of the pumps used...
Click here for "Focus on Fundamentals" Part One, Part Two, Part Three and Part Five. In the June 2008 issue, we turned our attention from centrifugal to positive displacement pumps. This month, we...
Pumps & Systems, April 2008Artificial lift technology selection is highly dependent on the conditions of the wellbore and the specific application parameters of a given well. Electrical...
Progressive Cavity Cake Pumps in Wastewater Treatment
Replacing conveyors with pumps improves efficiency and sanitation in an Ohio wastewater treatment plant.A Delaware, Ohio, wastewater treatment plant needed a solution to replace its conveyer system....