Maximising Efficiency with Liquid Ring Vacuum Pumps
30 March 2026
In a world where resource efficiency is increasingly critical, liquid ring vacuum technology – with modern recirculation – is a smart investment.
Vortexing can occur when liquids move in a circular motion forming a cavity, it’s most prevalent in situations where a suction force is applied.
Vortexing problems can affect all kinds of centrifugal pumps . This occurs when water being drawn into a suction line results in a depression in the surface of the water, often forming a visible whirling vortex -this gives the same effect that you see when draining a sink or bathtub. A vortex leading into a pump can cause the pump to entrain air, since air is easier to pump than water this will cause the pump to operate inefficiently and at a reduced performance condition.
Some common symptoms which indicate you may be experiencing vortexing are:
Your pump is making an unfamiliar noise, often described as growling
If you can see the liquid you are pumping you may be able to see a whirlpool
You will experience a reduction in flow
Common causes of vortexing are:
The volume of liquid is not high enough and is not above the suction line entrance
The velocity is too high when the fluids enter the pump at the suction line entrance
Vortexing can sometimes be confused with cavitation but this is a completely seperate issue
In a world where resource efficiency is increasingly critical, liquid ring vacuum technology – with modern recirculation – is a smart investment.
A UK manufacturer cut pumping energy costs by nearly £1 million in a single year by replacing compressed air-driven pumps with high-efficiency electric alternatives.
We are pleased to be exhibiting at CHEMUK 2026, the UK’s leading trade show for the chemical, process engineering and formulated product industries.
We are delighted to announce that CDR Pumps has been shortlisted as a finalist for the Chemicals Northwest Supplier to the Chemical Industry Award 2026.