Despite their apparent simplicity, centrifugal pumps come in a wide range of types, sizes, shapes, standards, stages, speeds, sealing and other design features, construction materials, orientations, and so on.
Experts benefit from more options because they provide a broader range of options. More options, on the other hand, cause more confusion for beginners because they expand the selection criteria.
One of the most frequently asked questions is whether a horizontal pump is superior to a vertical pump, or how to select the proper type of pump.
Let's a comparison between horizontal and vertical centrifugal pump
Both pumps use the same basic principle of centrifugal force to move liquids through the impeller and into the discharge pipe.
Both horizontal and vertical pumps can handle similar types of liquids, such as water, oil, and chemicals.
Both types of pumps are available in a range of sizes and materials to meet different performance and durability requirements.
Specific speed options and radial mixed axial flow options are available
Both can have different impeller configurations like open/ semi-open/ Closed.
All sealing methods (Mechanical seal, Packing seal) are available in both the options
Design: Horizontal centrifugal pumps have a horizontal shaft and an impeller that rotates within a casing. Vertical centrifugal pumps, on the other hand, have a vertically-oriented shaft and an impeller that is suspended within a casing.
Space requirements: Horizontal centrifugal pumps are typically larger in size and require more space for installation as compared to vertical centrifugal pumps. Vertical pumps are more compact and occupy less space, making them suitable for applications where space is limited. Eg. offshore Platform
Installation requirements: Horizontal pump installation is more complex than vertical inline pump design. Alignment is necessary among pump, piping, and motor mounting. Vertical pumps are easy to install, being inline design can be simply suspended like a valve in piping works
Flow rate: Horizontal centrifugal pumps can generate higher flow rates than vertical centrifugal pumps. As a result, they are well-suited for large-scale applications requiring high flow rates. Vertical centrifugal pumps, on the other hand, are better suited for applications requiring a low flow rate.
NPSH requirement: NPSH (Net Positive Suction Head) is the amount of pressure required to prevent cavitation in a pump. Horizontal centrifugal pumps typically have a lower NPSH requirement than vertical centrifugal pumps, making them more suitable for applications where the liquid source is low.
Maintenance: Horizontal centrifugal pumps are easier to maintain compared to vertical centrifugal pumps, as they have more accessible parts and require less disassembly.
Drivers types: Horizontal pumps for electric motors, diesel engines, and gearboxes. Vertical pumps good for motor drive
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