Positive Displacement Pumps
DXP is proud to represent many world class suppliers for every type and class of positive displacement (PD) pumps. PD pumps are flow producing devices and are typically used to move higher viscosity or sheer sensitive fluids for any application and for any market. Complete pumps and spare parts are typically in stock at one of DXP’s distribution centers or at a local DXP service center.
DXP represents several world class manufacturers of twin and 3 screw pumps. Screw pumps are preferred due to their reliability, quiet running and versatility and are applied in many markets such as hydrocarbon and chemical processing, food & beverage, Navy and commercial marine, crude oil transfer, multiphase, power generation, pulp & paper, hydraulic elevators and general machinery. Screw pumps can handle thinner liquids or liquids containing solids since the screws are timed preventing them from making physical contact.
Screw Pump Manufacturers
DXP represents several world class lobe pump suppliers and applies lobe pumps in multiple markets including food & beverage, pharmaceutical, biotechnology, chemical, municipal and other industrial markets. Typically lobe pumps are used in sanitary or ultraclean applications but they can also be applied when transporting various forms of sludge, bio-solids or greases. Unlike other rotary positive displacement pumps, lobe pump use timing gears to prevent the two rotors from contacting one another, allowing them to be more tolerant of solids and also to be more shear sensitive.
Lobe Pump Packages Manufacturers
- Wright Flow Technologies
- Alfa Laval
- SPX APV
Air Operated Double Diaphragm
DXP represents multiple world class suppliers of air operated double diaphragm (AODD) pumps. AODD pumps are one of the more versatile types of positive displacement pumps since they are self-priming, shear sensitive, can run dry and are inherently explosion proof. AODD pumps require a compressed gas, normally air, to power the pump and are portable by design. AODD pumps are constructed using a wide range of metallic and nonmetallic materials and also an equally wide range of diaphragm elastomers, ball or flap check valves.
Air Operated Double Diaphragm Pump Manufacturers
- Warren Rupp