by LizCarey | Jun 9, 2021 | Articles
We recently wrote an article on how to read the information presented on a standard centrifugal pump performance curve and to develop this further we need to examine how this relates to the system curve. So, what is the system curve? This plots the head in terms of...
by LizCarey | May 17, 2021 | Articles
Utilising Inverters with Industrial Pumps Utilising inverters with industrial pumps. In the commercial building services sector, inverters are widely accepted however it would seem the industrial sector still have reservations when it comes to using Inverters to...
by LizCarey | May 5, 2021 | Articles
This may seem a basic topic but if new to selecting centrifugal pumps it is an essential skill to know. Pump manufacturers will supply a performance curve detailing the following information: flow, head, power absorbed, efficiency and NPSH required. On all curves some...
by LizCarey | Apr 21, 2021 | Articles
Factors affecting Pump Efficiency The overall efficiency of a centrifugal pump is the product of three individual efficiencies: mechanical, volumetric, and hydraulic: Mechanical efficiency Mechanical efficiency includes losses in the bearings (long couples...
by LizCarey | Mar 4, 2021 | Articles
What are the Affinity Laws? The pump affinity laws are a set of formulas that help predict flow, head, power absorbed at different shaft speeds. If you know the shape of a pump performance curve at a certain speed or with a certain impeller diameter, you can use the...
by LizCarey | Feb 15, 2021 | Articles
A guide to Centrifugal Impellers Centrifugal pump impellers come in many shapes and sizes, each having their own uses and advantages. There are two aspects of the impeller, regardless of the type, that are worth remembering: Impeller Diameter: The diameter of a...
