What is a Vertical Multistage Pump
A vertical multistage pump is a centrifugal pump containing two or more impellers. The impellers may be mounted on the same shaft or on different shafts, but for the majority if pumps they are on the same shaft.
The fluid flows into the inlet of the pump casing where it flows into the eye of the impeller. The impeller is driven & rotated by mechanical means such as an electric motor or engine etc.
The rotation of the impeller creates centrifugal force which directs the fluid along the impeller vane and pushes the fluid to the outer tip of the impeller vane where it enters the stage diffuser.
The diffusers are a type of cutwater which direct the fluid into the suction eye of the next impeller. This process continues until the fluid has passed through each impeller stage. The fluid is then directed out the pump casing through a final diffuser and into the pump discharge.
Each stage that the fluid passes through increases the discharge pressure.
Multistage pumps are used when higher pressures are required which single stage pumps of the same size are unable to attain.
Applications for Vertical Multistage Pumps
Vertical Multistage pumps are installed in applications where higher pressures are required including industrial, commercial, medical, industrial, high rise buildings, municipal water supply and agricultural applications including irrigation
Types of Vertical Multistage Pumps
Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from which it exits.
Common uses include water, sewage, agriculture, petroleum and petrochemical pumping. Centrifugal pumps are often chosen for their high flow rate capabilities, abrasive solution compatibility, mixing potential, as well as their relatively simple engineering.
Lowara eSV Series
The Lowara e-SV range of vertical multistage pumps is a highly reliable and technologically advanced series of multipurpose pumps.Read More
Ebara EVMS Series
The EVMS series from Ebara consists of multitstage pumps with a unique low axial thrust impeller design.Read More
Ebara EVMSG Series
The EVMSG Series is a non-self-priming, vertical multistage in line centrifugal pump offering providing high discharge heads and high efficiencies, with an in-line design. It requires minimal floor space for installationRead More
Grundfos CRI, CRIE CRN CRNE Series
The Grundfos CR vertical, multistage, centrifugal in-line pump family works for water supply, water treatment and almost any industrial solution – including those for high-pressure, hot, dangerous, flammable and aggressive liquids.Read More
Renewable pumps use renewable energy solutions including solar to power the pump. They present a cost effective, flexible and secure water supply solution for agriculture, irrigation or remote areas.
The CR Flex series from Grundfos is an effective pump solution for applications including small-scale irrigation, livestock and fish farming, water supply for remote villages, pressure boosting in the house and swimming pools.Read More
Grundfos RSI Inverter
The IP66 off-grid Solar Inverter (RSI) is designed to for solar water solutions, offering low (or nearly no) operating costs. It is incredibly easy to setup and install, and pairs easily with SP submersible pumps as well as a broad range of Grundfos pumps, creating a modular system which allows maximum components flexibility.Read More