Find your chemical pump solution now! Pump failure creates the wrong kind of pressure. Here at Crest Pumps, you can trust us for reliable and corrosion resistant chemical pumps. Plus lifetime support for every pump! What does lifetime support mean? Well, no matter how...
INTRODUCING THE NEW EOV PUMP RANGE! Based on our very popular ECC Range. The EOV pump range based on a radically redesigned volute casing and impeller featuring an improved vane design that improve efficiencies by up to 35%, not only are flow rates and...
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...
Common terms used in the pump industry. Absolute pressure: The absolute pressure is the sum of the gauge or dial pressure and the atmospheric pressure (14.7psi). If your pump gauge reads 150 psi, then the absolute pressure will be 164.7 psi. Absorbed Power: This is...
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...
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...
The overall efficiency of a centrifugal pump is the product of three individual efficiencies: mechanical, volumetric, and hydraulic:…
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...
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...
Commonly Pumped Chemicals During a recent survey of all enquiries we received for chemical applications we found that around 50% were for a very small number of chemicals, so we thought it would be useful to run through these chemicals and list the suitable pump...
Understanding Viscosity When people talk about understanding viscosity, they are talking about one of two things: dynamic (also known as absolute) viscosity or kinematic viscosity. How to measure Viscosity One way is to measure a fluid’s resistance to flow when an...
Mechanical seal selection - A technical briefing Crest offers many types of pumps with a variety of arrangements including magnetic drive, seal less and mechanical seals. There are several types of mechanical seal and whilst Crest can fit specific seal if required, it...
From chemical manufacturing to wastewater treatment, and as a UK manufacturer, we can tailor any pump to meet your exact requirements with little change in cost or lead time.
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