Charles Austen E Series Pond Filter Pumps
Large screened submersible pumps for filters, waterfalls and debris-bearing pond water
E Series is the purpose-built pond-filter family in this group. A broad grated intake surrounds the pump, screening out larger debris while the impeller can pass suspended solids up to 6 mm. The ball-joint outlet helps aim the connection without forcing the hose into an awkward bend.
The range starts with the E5000 at 4,800 l/h and extends to E20000 at 17,800 l/h. All are submersible. Charles Austen also lists thermal-overload protection and multiple outlet adaptors.
A filter pump should be selected from the turnover needed after pipe and filter losses. Do not size it from pond volume and maximum flow alone.
Model Comparison
| Model | Maximum flow | Maximum head | Power |
|---|---|---|---|
| E5000 | 4,800 l/h | 2.1 m | 54 W |
| E8000 | 7,150 l/h | 2.5 m | 72 W |
| E12000 | 10,850 l/h | 3.4 m | 135 W |
| E15000 | 14,200 l/h | 4.1 m | 175 W |
| E20000 | 17,800 l/h | 5.5 m | 210 W |
Maximum figures are comparison points measured under favourable conditions. Delivered flow falls as head and system resistance increase.
Designed for pond filtration
The intake cage presents a large surface area, so the pump can draw from around its body without one small screen blocking immediately. It keeps out leaves and larger material while allowing smaller solids to travel to an appropriate mechanical filter.
That only works when the downstream filter is designed to receive solids. Do not pump coarse waste into a restrictive UV or fine cartridge without suitable pre-filtration.
Choose the working flow
E5000 and E8000 fit modest garden systems. E12000 and E15000 cover larger filters and waterfalls; E20000 provides the strongest flow and head. Check the filter’s recommended flow window and allow for pipe loss.
A larger pump is not automatically better. Excess flow can reduce contact time, disturb settlement stages or exceed a UV’s recommended rate.
Install for easy maintenance
Keep the cage accessible, use large-bore pipe and include unions or flexible connectors so the pump can be removed. Inspect the intake before a fall in flow becomes severe.
Our advice: the E Series is the logical Charles Austen choice for a conventional submerged filter-pump duty. Choose the exact model from the filter flow required at the return.
Related Pump and Installation Categories
Charles Austen pump families · Pond filter pumps · Pond filters · Pond pipework
Frequently Asked Questions
What solids can E Series pass?
Charles Austen states that the pumps can pass suspended solids up to 6 mm.
Are E Series pumps submersible?
Yes. The manufacturer describes this family as submersible pond pumps.
What does the intake cage do?
It screens leaves and larger debris while allowing smaller particles to reach the pond filter.
Can E Series feed a waterfall?
Yes, if the model delivers the required flow after lift and pipe losses.
Which model suits a 10,000 l/h filter?
E12000 may be the starting comparison, but calculate the actual flow at the installed head.
Can too much flow harm filtration?
It can reduce settlement or exceed the recommended flow of filters and UV units.
Does it have thermal protection?
Charles Austen lists thermal-overload protection for the E Series.
Can the outlet angle be adjusted?
The series includes a ball-joint outlet adaptor to help align the connection.
Does maximum flow tell me what will reach the filter or waterfall?
No. Maximum flow is measured with little or no head. Lift, pipe length, fittings, hose diameter and connected equipment all reduce delivered flow.
Is maximum head the height at which I get full flow?
No. Maximum head is the shut-off end of the performance curve, where useful flow approaches zero.
Should I use the largest connection possible?
Usually yes. Generous, smooth pipework reduces friction and helps the pump deliver more water for the same electricity.
Can I reduce flow with a valve?
A valve can trim a water-pump output where the instructions allow, but a correctly sized pump or approved controller is normally more efficient than heavy throttling.
How often should I clean the pump?
Inspect it whenever flow falls and as part of routine pond maintenance. Keep the intake, rotor and impeller chamber clear without damaging seals or shafts.
Can you help size a E Series pump?
Yes. Send us the required flow, vertical lift, pipe bore and length, major fittings and the equipment the pump will feed.
Why is my real flow lower than the model name?
Model names and maximum-flow figures do not include the resistance of a real installation. A flow test at the return is the best check after installation.
