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Protect your pump with the Seradisc Filter Screen
and say goodbye to the 'can' filter!

Whatever system of water delivery is used, it is crucial that adequate screening is provided to protect the pump and system. Conventional filter screens are usually of the ‘can’ type construction which offer relatively low performance against the ingress of debris and air which may be causing excessive wear to your pump - whilst many systems are operating without any screening at all!

Seradisc No Can Filter

The Seradisc Filter - better by design

Seradisc Filter - cut away with arrows

The Seradisc’s unique design has increased the screen surface area, diffusing the flow and reducing the velocity at any given point. This helps prevent vortexing and subsequent cavitation.

The design also allows for the discs to be squeezed together or expanded apart, giving you total control over the particle filtration grades.

For more detailed information regarding the Seradisc Filter Screen, please see our dedicated website at

bespoke Seradisc filter screen manifolds for high volume suction

How the volunteers at a UK sea pool used a Seradisc Float System to save on filter cleaning and pump repairs and reduce pool cleaning time. They had to complete the job before the tide came back in!

How Charlie saves time and money by using a Seradisc filter to protect his mono pump.

Charlie Tippett using Seradisc filter to protect his pump

Supplied as an easy-to-assemble kit

seradisc filter box image

See how easy it is to assemble the kit

Why use the Seradisc?

The unique design of the filter discs enables a high flow area whilst maintaining exceptional structural strength. The integral leaf springs allow a constant load to facilitate optimal pressure between the discs, enabling them to remain parallel with varying separations which can be achieved with the addition of extra discs.


Conventional filter screens offer limited resistance to blocking due to their relatively small screen area. Because they are considered problematic, many pumps are therefore operated without the inclusion of any inlet filter screen. This ultimately leads to the premature failure of the pump or downstream system due to the ingress of undesirable debris

Blocked can filter image

Vortex Diffusion

Apart from the ingress of debris, another common issue with the conventional can type filter screen - or not using any filter - is that of vortexing. Air is very detrimental to pump operation and is often induced unnoticed, causing low performance and operating efficiency as well as potential long-term damage to the pumping equipment. A vortex forms at the point of highest velocity, where the currents begin to rapidly rotate due to instability. This initiates in the first area of smallest cross section, which is usually the entry of the suction pipe. From here, the vortex funnel gradually widens up to the water surface, where air is then sucked into the pump.

vortex image

vortex unlikely to form in an elliptical flow

Seradisc vortex forming image

The parallel structure of the discs in the Seradisc screen interfere with the circular formation of a vortex forming. Because the outer surface area of the Seradisc filter screen is extremely large, the velocity of water flow at any given point is relatively low. This dramatically reduces the likelihood of a vortex from forming from any point on the outer surfaces.

After successful trials, premier UK rainwater harvesting systems manufacturer, Stormsaver Ltd, now incorporate Seradisc filters in their inline disc filter systems.

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